Portsmouth
- Episode aired Sep 16, 2019
- 43m
The true crime series returns. Katherine travels to Portsmouth to learn about Allan Grimson, a former Royal Navy petty officer who murdered two men on 12th December of 1997 and 1998 and may ... Read allThe true crime series returns. Katherine travels to Portsmouth to learn about Allan Grimson, a former Royal Navy petty officer who murdered two men on 12th December of 1997 and 1998 and may have killed others on the same date each year.The true crime series returns. Katherine travels to Portsmouth to learn about Allan Grimson, a former Royal Navy petty officer who murdered two men on 12th December of 1997 and 1998 and may have killed others on the same date each year.