What to Watch on Saturday: Two series end, plus a new Animal Planet show about rescue dogs

Doubt (8 p.m., CBS) – Two new episodes end the series. First, Sadie gives closing arguments in Billy’s trial and the jury deliberates. At 9, Sadie learns Billy’s secret after the verdict.

Gone: The Forgotten Women of Ohio (8:30 p.m., Spike) – Tracking Dollar Bill’s ruthless drug empire leads investigators to Columbus, where they find two more missing women and evidence of a sex trafficking trade.

TURN: Washington’s Spies (9 p.m., AMC) – In the series finale, the fate of the Culper Ring is revealed, and the American War of Independence comes to an end.

Rescue Dog to Super Dog (10 p.m., Animal Planet) – In this new series, shelter dogs are given a second chance by being companion dogs to those with disabilities.