Christmas afternoon, neighbors found a woman's body floating in St. Petersburg's Lake Maggiore. That was just one of a string of crimes over the holiday weekend, proving the most wonderful time of the year can also be the most violent.

Christmas Eve morning, Karen Lyn Biraghi admitted to sheriff's deputies she shot and killed her husband, Alan Biraghi. Marital problems apparently pushed her over the edge and she allegedly shot her husband in the head at point-blank range while he slept on the couch.

Hours later, on Christmas morning in Orlando, two men turned up murdered in separate crimes, but Orlando Police believe the killings are connected.

Meanwhile outside Dallas, Texas, police say a man walked in to a family gathering, shot and killed six of his relatives, then killed himself. Investigators report the shooter committed the violent acts while dressed as Santa Claus.

"I can't imagine anybody doing that to their family," a neighbor said.

Back in the Bay area, a Pasco County deputy opened fire on a man, killing him on Christmas Day. Authorities say Brian Keith Naab pulled a handgun and aimed it at a deputy responding to a 911 call.

That shooting happened just hours after the woman's body turned up in a St. Petersburg lake.

Crime statistics and psychiatrists agree the violence shouldn't come as a surprise with all of the stress surrounding the holidays. "Any day of the year, it's very tragic, and it's certainly amplified because it is Christmas."

St. Petersburg Police have not yet released the woman's name. Officers are also still waiting for the exact cause of death from the medical examiner, but they do say her death is suspicious and is being investigated by detectives from the homicide unit.