S2·E16 Spell of Murder
Aired January 11, 1960
Synopsis
An attempt is made on Arnold Simpsons' life when he hires Gunn to find out who is blackmailing him. He tells Pete about a dig he was on with Frank Victor and how he abandoned him when the cave collapsed. Gunn is sent to the Blue Pheasant to pick up a parcel for Simpson and delivers it to him and is stunned when it goes off.