WARNING: This article may contain spoilers for NCIS season 17 episode 16. Read at your own risk.

NCIS season 17 episode 16 arrives on CBS next week, with the title "Ephemera." The upcoming episode will be a different one, as some of the characters will imagine themselves being someone else to solve a mysterious case. The team will investigate the story about the mysterious coin that ended up in the hands of a retired Navy officer. 

In NCIS season 17 episode 16, the team will be investigating the suicide case of a retired Navy officer. However, they soon discovered that he left a rare, valuable, and probably stolen coin to the National Museum of the Navy. They will try to piece the clues together and will imagine themselves in his life story to understand how he obtained this item.  

The story behind it will be the central mystery of the upcoming episode. The team will try to imagine themselves as another person to find out the truth about the coin. A lot of stories are possibly tied back to this object, and the team will try to figure out how it ended at the hands of the retired Navy officer. This proved to be an interesting journey for the team and an exciting episode for viewers. 

Some photos of the upcoming NCIS season 17 episode 16 show that Wilmer Valderrama and Emily Wickersham aren't portraying their characters Nick Torres and Ellie Bishop, respectively. Instead, the two were playing different roles; dream-sequence characters. Both of them look entirely different and they are not living in the present time. 

The photo shows that Bishop and Torres are getting closer, but they're not actually playing their characters. The team will imagine the two being someone else so they could track the history of the mysterious coin. Torres, in particular, looks different since he has a mustache. The photo also hints that he and Bishop are seemingly dancing.  

As for the promo of the upcoming episode, the clip didn't show anyone reenacting where the coin has been. Instead, the video shows the team investigating the apparent suicide of the retired Navy officer and the found the coin on his hand. The object is considered to be one of the most valuable coins around the world. They started to wonder why it ended up in the officer's possession. 

NCIS season 17 episode 16 will be arriving on Tuesday, Feb. 18, on CBS.