Tom Mulcair will find himself in an unusual spot on Thursday. Members of a House of Commons committee are expected to grill the NDP leader over the party's use of parliamentary resources to pay staff working in a satellite office in Montreal.

Did the party break the rules?

Speaking of breaking the rules, CBC News has learned more about the Auditor General's work on Senate expenses.

Kady O'Malley took questions on these and other big political stories of the week.

Mobile users can read the chat recap here.