Alibi (2003)

"Alibi" is a thriller with a bit of romance and touches of black humour along the way. Greg is discovered with the dead body of his wife's lover by Marcey, a public servant moonlighting as a waitress at a party thrown by Greg for his and his wife's wedding anniversary. Marcey sets about 'organising' the slightly neurotic Greg in his attempts to cover up the 'accident'.