At Home with the Rozes (2003)

Two ex-convicts, MG and Gilbert find refuge in a charming middle-class house whose couple is about to celebrate its 20-year old marriage. Our duo has no other solution than to take this entire brood in hostage. But, contrary to all expectations, they are warmly greeted by the occupants who don't think twice before helping them, they are even ready to put their guests off, even to kill them if necessary...