Hawaii Five-0 (9 p.m., CBS) – In the two-hour Season 5 finale, Chin talks to McGarrett about his concerns regarding Adam, and a fanatical patriot wants a new war on terror. Fingers crossed for fans of this show, but ratings experts aren’t predicting a renewal.
Also on tonight . . .
Grimm (8 p.m., NBC) – As Hank and Nick get close to identifying a vicious serial killer, Wu’s life is put in jeopardy. Also, Juliette forms a new allegiance as she pursues revenge, and Trubel returns to Portland.
Cold Justice (8 p.m., TNT) – John Walsh talks to the team about their investigations and gets updates on past cold cases.
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America’s Ballroom Challenge (9:30 p.m., UNC-TV) – The winning couples in four divisions compete across dance styles in the fifth season finale.
Meet the Smiths (9 p.m., TBS) – In the first season finale, Kenny and Gwen work on putting the romance back in their relationship, which is more difficult than they expected. No announcement from TBS yet about whether or not this gets another season.
Lost Girl (10 p.m., Syfy) – Bo and Tamsin disagree when a young Fae asks for their help.