We Could Be Heroes (S05E29)

When a retiring cop is assaulted and tied naked to a wharf, the detectives set out to find the man responsible. When their investigation reveals other victims, it is realised the attacker is picking his victims from a local newspaper column highlighting Good Samaritans. Mick asks Alex out on a date and arranges a meeting between Grant Hackett and a young swimmer Alex catches snatching wallets. (Prime Video)