It may seem like one of the least controversial shows on television, but the cast of the long-running hit drama NCIS, which has been on the air since 2003, has had a lot of secrets bubbling under the surface throughout the years.

Like many TV shows, NCIS doesn't exactly present an easy workload for its cast members, and for some, the grueling hours have just been too much. Some have experienced horrible tragedies, and others have been in trouble with the law. Let's take a closer look at some of the dark secrets the cast of