Secret History
Thus was uncovered one of history's most macabre bouts of serial killing. The official victim count was 27; other estimates ranged sharply upward.
The investigation soon centered on the building's owner, Marcel Petiot, a quick-witted, charming doctor with a checkered past. Petiot finagled state reimbursement for unorthodox treatments, often double-dipping by charging patients too, and was implicated in narcotics dealing. He also claimed to be part of a Resistance organization helping people, especially Jews, escape Nazi Europe, for a sizable fee.
Whilst examining a rural Norfolk church, members of the Norfolk Medieval Graffiti Survey (NMGS) came across an intriguing inscription etched deeply into one of the pillars of the building. The discovery, made in All Saints church, Litcham, was traditionally thought to be the work of a pilgrim travelling to the important shrine of Walsingham in North Norfolk. However, closer inspection of the inscription using new technology revealed that all was not as it seemed.
The Litcham Cryptogram
"The inscription is known as the Litcham Cryptogram", explained Project Director Matthew Champion, "and has been known about for some decades. Indeed, it was the reason that we chose to carry out one of our first surveys in All Saints. We were interested in looking to see if the church contained further graffiti inscriptions that had not been previously recorded".
The initial survey work soon proved that the Litcham Cryptogram was by no means the only inscription to be found in the church. Within a matter of days the survey had identified over fifty individual images and inscriptions etched into the soft stone pillars of the church. "Almost every pillar was covered with inscriptions", continued Matthew, "and it was clear that there had once been many more. However, our attention kept coming back to the Litcham Cryptogram".
Archaeological sites are often in remote and rugged areas. As such, it can be hard to reach and map them with the limited budgets archaeologists typically have. Scientists are now using drones to extend their view into these hard-to-reach spots. "There are a lot possibilities with this method," said researcher Marijn Hendrickx, a geographer at the University of Ghent in Belgium.
The machine tested in a remote area in Russia called Tuekta was a four-propeller "quadrocopter": the battery-powered Microdrone md4-200. The fact it is small ? the axis of its rotors is about 27 inches (70 cm) ? and weighs about 35 ounces (1,000 grams) made it easy to transport, and researchers said it was very easy to fly, stabilizing itself constantly and keeping at a given height and position unless ordered to do otherwise.
The engine also generated almost no vibrations, they added, so that photographs taken from the camera mounted under it were relatively sharp. Depending on the wind, temperature and its payload, the drone's maximum flight time is approximately 20 minutes. [Drones Gallery: Photos of Unmanned Aircraft]
Using cutting edge underwater survey equipment and site reconstruction software, archaeologists and computer scientists have joined forces to map and digitally recreate a Bronze Age port which was swallowed by the waves up to 3000 years ago.
It's the first time that a submerged city has ever been fully mapped in photo-realistic 3D. The entire city - covering 20 acres - has been surveyed in ultra-high definition, with error margins of less than three centimetres.
The survey - carried out by an archaeological team from the University of Nottingham - is the subject of a special BBC Two documentary, tomorrow Sunday evening.
The original name and political status of the site is a complete mystery. The evidence so far suggests that it flourished between 2000 and 1100 BC, peaking in size in the two century period, 1700-1500BC, and being abandoned about a century before the end of the millennium.
The platform, carved with snake heads, was found under Mexico City's Templo Mayor ruin, a complex of two huge pyramids and numerous smaller structures that contained the ceremonial and spiritual heart of the pre-Hispanic Aztec empire.
The find has raised hopes that there could be an emperor's tomb buried nearby.

Discovery: A figure in the shape of a serpents' head decorates a newly discovered platform at the archaeological site Templo Mayor in Mexico City
Mexico's National Institute of History and Anthropology said the stone platform is about 15 yards in diameter and probably built around A.D. 1469.
The site lies in downtown Mexico City, which was built by Spanish conquerors atop the Aztec capital of Tenochtitlan.
Four to five thousand years ago, a wealthy teenage girl was laid to rest in a grave at what archaeologists believe is a newly found henge in Kent, England.
The discovery of the 17-year-old's grave -- along with a unique prehistoric pot inside of a ringed ditch near two other women -- strengthens the idea that important death-related rituals took place at many of these mysterious ancient monuments when they were first erected.

Archaeologists excavate the site of a prehistoric teen girl's grave in Kent, England.
"What is becoming clear is that with a series of major excavations in Kent linked to road and rail works, and new aerial photography, there are many circular earthworks that look part barrow and part henge, and like the one fully excavated example at Ringlemere (Kent), some of these may be both," said archaeologist Mike Pitts, publisher of British Archaeology, where a summary of the recent finds appears.
The road, known as a "sacbe," is roughly 6 feet across and is made from white volcanic ash from a previous eruption that was packed down and shored up along its edges by residents living there in roughly A.D. 600, said CU-Boulder Professor Payson Sheets, who discovered the buried village known as Ceren near the city of San Salvador in 1978. In Yucatan Maya, the word "sacbe" (SOCK'-bay) literally means "white way" or "white road" and is used to describe elevated ancient roads typically lined with stone and paved with white lime plaster and that sometimes connected temples, plazas and towns.

A small portion of the Wurdi Youang stone arrangement in Victoria, Australia.
The stunning discovery of what is being called an "Aboriginal Stonehenge", the first of its kind to be found in Australia, could change that continent's history and with it our whole understanding of how and when humans began to accurately chart the night skies.
The 50 metre egg-shaped arrangement of stones in a farmer's field in Victoria, was forgotten after the arrival of European settlers some 200 years ago and until recently overgrown by meadow grass.
Now, the site called Wurdi Youang has got Aborigines and astronomers scratching their heads.
How did its stones come to be perfectly aligned with summer and winter Solstices and the autumn and winter Equinoxes, like Britain's 4,500 year-old Stonehenge?
The discoveries were made as part of a second season of fieldwork undertaken as part of the Joint Historical and Archaeological Survey - the only systematic survey of the battlefields of Gallipoli since the First World War.
The survey covered the northern frontline areas on the Turkish and Allied sides. One of the most significant finds was the Malone's Terraces area at Quinn's Post.
William Malone commanded New Zealand's Wellington Infantry Battalion. Malone's men relieved the Australians at Quinn's Post in June 1915. This was a key position, where even the smallest advance by the Turk's would have forced the evacuation of the Anzacs.
The dozen scratchings were uncovered during a three-week excavation at Nevern in Pembrokeshire.
Archaeologists think the stars and other designs were made by a serf, labourer or soldier some time between 1170 and 1190 when the castle was built.
They say they also give an insight into the beliefs of medieval working men.
Dr Chris Caple of the University of Durham led the archaeological dig at the site and said the slates were from a late 12th century cut-stone entranceway.
"They were found in only one place in the castle and were probably intended to ward off evil," he explained.
"In the late 12th century, Nevern would have been an impressive looking castle and entrance, especially from the south side, and it was clearly visible to all passing along the road between St David's and Cardigan.