NCIS Gibbs, McGee and Torres (Mark Harmon, Sean Murray, Wilmer Valderrama) venture into a rebel-held part of Paraguay to find a Navy SEAL who vanished while on a trip that wasn’t officially sanctioned. Pauley Perrette, David McCallum, Jennifer Esposito and Emily Wickersham also star in the season finale. 8 p.m. CBS
The Flash Wentworth Miller (who also stars in a new episode of “Prison Break”) returns as Captain Cold, the only one who can help Barry (Grant Gustin) save Iris (Candice Patton) from Savitar. Jesse L. Martin and Carlos Valdes also star. 8 p.m. KTLA
The Middle Frankie and Mike (Patricia Heaton,...