Trial 4: Everything We Know About John Mulligan’s Death

Lydia Livingston
Trial 4: Everything We Know About John Mulligan's Death

BOSTON, MA - JUNE: Detective John J. Mulligan of the Boston Police Department on June 18, 1978. John Mulligan was profiled by the Boston Globe for his notoriety within the police department. In 11 months, he participated in over 500 arrests, resulting in about 400 convictions. On Sept. 26, 1993, John Mulligan was shot to death during a security detail in his police vehicle in front of a Walgreens on the American Legion Highway in Roslindale. Sean K. Ellis was later tried and convicted for his murder, but years later the conviction was overturned. (Photo by John Blanding/The Boston Globe via Getty Images)

52-year-old Boston detective John Mulligan was murdered execution-style on