Spell of Murder
S2:E16
1960
IMDb
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.