A complete guide to every NCIS crossover event, including what happened in the episodes across the expanding franchise.

On November 11, CBS staged its first crossover event between NCIS and NCIS: Origins with a 2-episode event. Leading up to the crossover, fans were excited to see how the creative team would bring the ...

During the Tuesday, November 18, episode of the CBS prequel, Lively, 53, made a surprise appearance as Randy's mother, Maxine, in several flashbacks. Randy's birthday in the current timeline triggered ...

It's common for shows set in the same universe to stage crossovers as a treat for fans. In most instances, both shows have to share a timeline, but sometimes the writers pull a neat trick. Check this ...

They take place in two different time periods but leave it to the NCIS writers to figure out a way to do a crossover. In November, NCIS and NCIS: Origins will share a “decades-spanning mystery.” It ...

NCIS: Origins brought in Robyn Lively to play a key role after she previously portrayed a different character in the NCIS universe. During the Tuesday, November 18, episode of the CBS prequel, Lively, ...