Sometimes, a non-linear storyline serves a purpose. It can unravel a mystery piece by piece and keep the audience guessing. Sometimes, it just appears contrived. In The Debt, the non-linear storyline revealed how a trio of ex-Mossad agents had been living a lie since a seemingly high-profile arrest of a Nazi war criminal. The narrative gimmick also caused the film to drag, separating a clichéd spy story from a more interesting drama. The cast who portrays the characters in the current day are compelling, although barely featured. One of the premises of the film is that the lies told by …