This week's NCIS will see Abby (Pauley Perrette) use a special set of skills for a very important mission.

In this exclusive clip, the forensic scientist taps into her storytelling talents to record a bedtime story as part of a video anthology for McGee (Sean Murray) and Delilah's (Margo Harshman) twins, Johnny and Morgan. The project impresses Reeves (Duane Henry), who is intrigued by how McGee is able to juggle work with such an intensive venture. "Since the twins were born, you hadn't even missed a step at work," Abby points out.

However, McGee sidesteps her observation to focus on the task at hand: Figuring out who murdered a Navy commander. When his body is discovered, Gibbs (Mark Harmon) is forced to work with a former FBI agent in order to solve the case.

Pauley Perrette Is Leaving NCIS

The episode also features Bishop (Emily Wickersham) and Torres (Wilmer Valderrama) going to interview Albert Hathaway (guest star Kevin Pollak), an investment advisor convicted of ripping off his clients who also ends up a person of interest after he's linked to the dead commander. Could he be the killer?

Watch the drama unfold when NCIS airs Tuesday at 8/7c on CBS.

(Full disclosure: TV Guide is owned by CBS.)