Spooky themes with stories of murder, executions and tortured witches. Discover the the darkest characters in Aberdeen’s history with this free tour of the city's most notorious witches, murderers and ghosts. If you love gory grisly history, then this is the tour for you. As dusk falls, see a different side to the city centre as you learn all about the most fiendish characters to ever walk these streets. The tour meets outside the Aberdeen Maritime Museum on Ship Row. The tour lasts an hour and a half.