The crown says Nadia Gehl's husband talked about having his wife killed in a conversation recorded by an undercover police officer.
33 year old Ronald Cyr is accused of first-degree murder.
The crown alleges he had two friends shoot Gehl while she was walking to a bus stop near their home.
His alibi was that he'd be at work as a legal assistant.
The crown says Cyr told the undercover officer he hired his friends for a share of half a million dollars in life insurance.
The trial is expected to last about 8 weeks.