GC Strategies was paid $19 million to create the controversial ArriveCAN app, according to the Auditor General Karen Hogan, placing the two-man company under intense scrutiny. Now MPs have had the chance to grill Kristian Firth, one of the company's partners. Abigail Bimman explains how Firth was on the defensive before a House of Commons committee; what he claims he was actually paid; and the questions he refused to answer.