Crabtree invents "tracing" the origins of a telephone call.
When this episode was written neither Mrs. Brackenreid or the children were given first names. Just before filming Thomas Craig and Arwen Humphries decided on the name Margaret.
The insects shown crawling on the corpse are not junebugs, but probably Zophobas morio.
During his interview with the Chief Constable for the post of Inspector at Station House No. 3, it is learned that Murdoch was born in Nova Scotia, his father was a fisherman with whom he has lost touch, and his mother passed away when he was young. Murdoch worked in a lumber camp "up north" after coming from Montreal, and stayed two winters before meeting a lumberman there who had been a constable. Liking "the sounds of it", Murdoch applied and became a policeman ten years ago. He was a constable for five years before becoming acting detective at Station House No. 4, and then promoted to full detective three years ago; he has headed up 36 murder investigations in that time and achieved convictions in all but two. Murdoch was engaged to a Liza Milner who passed away over a year ago; he is a Roman Catholic who can only attend mass once or twice a week but he tries to go for confession as often as possible.
The interview with the chief constable reveals that Murdoch has been a police officer for 10 years; 5 years as a constable, 2 years as an acting detective and 3 years as a full fledged detective. Since he has gotten convictions in 34/36 investigations, he has a conviction rate over 94%.