Parliament returns Monday after a six-week winter break. And MPs are heading into a key sitting -- the last one expected before this year's federal election.

Canada's role in Iraq, the economy – specifically tanking oil prices – and the government's new anti-terror legislation will top the parliamentary agenda next week.

Hill-watchers will also be keeping an eye out for any developments on the issue of harassment on Parliament Hill and whether the two female NDP MPs who accused now-suspended Liberal MPs Scott Andrews and Massimo Pacetti of harassment will be back to work.

And the controversial veterans affairs file will have a couple of new faces as Parliament resumes: recently-appointed Veterans Affairs Minister Erin O'Toole, who took over for the embattled Julian Fantino, and Pierre Lemieux as the new parliamentary secretary.

Here's a breakdown of what’s to come during the first week back.

MONDAY

The funeral for RCMP Cst. David Wynn, shot while on duty Jan. 17, will be held in St. Alberta, Alta., on Monday. Prime Minister Stephen Harper will attend the ceremony. 

Both opposition leaders will be in Ottawa Monday. Liberal Leader Justin Trudeau will host a rally at the Sala San Marco Banquet Hall Monday evening, where he will deliver remarks. 

The Department of National Defence will hold a briefing on Canada's mission against ISIS in Iraq. Senior Canadian Forces officials will surely face more questions about the mission, after it was revealed last week that Canadian soldiers recently engaged in a firefight with ISIS while visiting front-line positions with Iraqi forces. 

And the House Subcommittee on a Code Conduct for Members will meet behind closed doors. The subcommittee was created late last year, under the umbrella of the Procedure and House Affairs Committee, to deal with complaints of harassment. The creation of the committee comes after the removal of Andrews and Pacetti from the Liberal caucus amid harassment allegations. 

TUESDAY

Religious Freedom Ambassador Andrew Bennett, accompanied by senior bureaucrats, will appear before the Commons Foreign Affairs and International Development Committee Tuesday to answer questions about Canada's response to the violence, persecution and dislocation caused by ISIS. 

FRIDAY

The federal government will table its long-awaited anti-terror legislation Friday. In a speech Sunday, Harper said the new measures will "help authorities stop planned attacks, get threats off our streets, criminalize the promotion of terrorism, and prevent terrorists from travelling and recruiting others." The legislation is expected to give security agencies and police new powers.

The new legislation comes more than a month after two separate incidents in Ottawa and St-Jean-sur-Richelieu, Que., which left two Canadian soldiers dead, as well as in the wake of recent terror attacks in Australia and France. 

Canada’s premiers will meet in Ottawa Friday for their first meeting since oil prices plummeted to below $50 a barrel, down from more than $100 a barrel last June. According to Ontario Premier Kathleen Wynne, the provincial leaders will focus on forming an economic union, infrastructure and trade between provinces. And despite calls from Wynne to join the premiers, Harper will not do so.