Sean Murray, Wilmer Valderrama and Katrina Law will return in season 21 of NCIS. From the cast to the plot and release date, here's what you need to know about the new series.

Specific details on season 2 are a bit scarce, but we do have the synopsis for NCIS: Sydney season 2 episode 1. Read it right here: “NCIS: Sydney will do whatever it takes to crack the case of a ...