03/31/2009 at 07:05 PM EDT
It was on the Toronto set of the movie Chloe
that Liam Neeson first heard his wife Natasha Richardson had been in a skiing accident near Montreal. He rushed away to be by her side at the hospital, and was with her until the end
, two days later.
Last week, Neeson, 56, quietly returned to Toronto to finish work on the Atom Egoyan-directed thriller costarring Julianne Moore. He shot his last scenes on Friday and the film wrapped on Saturday, Neeson's rep confirms to PEOPLE.
Richardson, who died at age 45 from a blunt impact
to the head that caused internal bleeding, was laid to rest
March 22 in upstate New York.