'NCIS' Cast News: Sean Murray, Pauley Perrette, David McCallum, And Rocky Carroll Signed For Seasons 14 And 15

Nicole Giacobone

When Michael Weatherly decided to leave NCIS after 13 seasons, fans of the action police procedural were worried that more of the main cast might follow his lead since Mark Harmon, Rocky Carroll, Pauley Perrette, David McCallum, and Sean Murray's contracts ended after last season, too. Fans can now rest peacefully, since CBS' flagship series will air for two more seasons with the the remaining cast members.

Deadline received the exclusive news on June 24 that Murray, Perrette, McCallum, and Carroll had all signed contracts to appear in Seasons 14 and 15. NCIS star Harmon, who plays NCIS Supervisory Special Agent Leroy Jethro Gibbs, and is also an executive producer of the show, signed his 2-year contract back in February.

The popular CBS show experienced a major shakeup with the main cast from previous seasons. Fan favorite Cote de Pablo, who played NCIS Special Agent Ziva David, left after Season 11 for unspecified reasons. While Pablo first stated that her character was not gone forever from NCIS, David's fate seemed doomed at the end of Season 13.

Last January, CBS reported that Weatherly was leaving NCIS when the season finale ended in May. Weatherly, another fan favorite and one of the original cast members, has stated that it was his decision to leave the series and he "couldn't have had more fun playing him [Special Agent Tony DiNozzo] over the past 13 seasons."

It was announced on June 16 That '70s Show's Wilmer Valderrama signed on to join Season 14 of NCIS as a series regular. The name of Valderrama's character hasn't been announced yet, but his character is a grounded NCIS field agent who resurfaces after disappearing from a deep undercover assignment that happened years ago.

NCIS continues to remain as the number one most watched dramas on television, even after thirteen seasons on the air. When the show, originally a spin-off from JAG, first aired, it was barely making the Top 30 in ratings, but by Season 6, the action drama became a Top 5 hit among TV shows.

When the 2015-2016 season finished, the number for average viewers was in the 20.54 million range for first-run episodes. On February 29, CBS renewed the popular drama series for two more seasons.

[Image via NCIS.CBS/Instagram]