Cassidy Reid (Kelly Rohrbach), the prosecutor who ran for state Attorney General on Yellowstone, vanished after just a few episodes. Here's what became of her.
Bones star David Boreanaz attributed the show's sustained success to someone who never actually appeared on the series, but had an immeasurable impact on it.
An emotionally devastating closing moment of Slow Horses season 4 wouldn't have happened without a season 3 scene where two actors overdelivered in a big way.