The Doyles start trailing a potentially cheating husband to find he deeply loves his wife but is in deep trouble with some menacing criminals and smugglers; as Nikki moves forward with her new beau, Jake and Leslie take it to the next level.

Jake and Mal investigate a hit-and-run and encounter a slippery criminal couple; Rose has a run-in with familiar ghosts from her past; Des discovers that Tinny's trip to London didn't go as expected. Guest star: Shannon Tweed

The Doyles are hired to recover a missing item belonging to a beautiful client; Nikki asks Jake a favour he wants nothing to do with; Tinny enlists Des in keeping a secret.

The extended Doyle family shows up on the doorstep unannounced and in huge trouble, leaving Jake and Mal to tangle with some formidable gangsters from across the pond.

Jake's location is uncovered in the Season 5 premiere. Later, Tinny oversteps her bounds.

Jake and Mal chase after a mysterious and troublesome woman.

Jake must solve a puzzling case; Ned Bishop jeopardizes an important day; Leslie's past actions come back to haunt her.