Sherri Lynn Lamarche was the unassuming bookkeeper in a family real estate business in Nova Scotia. She was trusted so much that she managed to steal millions before anyone noticed.

Hosts Amber Haque and Dr Julia Shaw discuss how criminal psychology's model of the "fraud triangle" perfectly fits this ultimate office drama. It's a classic fraud story of opportunity, incentive and rationalisation.

Producers: Ciaran Tracey with help from Lorna Reader, Rhiannon Cobb and Shabnam Grewal