Cold Case Wiki
Ryan Stewart 2005
Ryan in 2005
Ryan Stewart 2009
Ryan in 2009
Ryan Stewart
Portrayed by Jesse Plemons
Episode The Long Blue Line,
Into the Blue
Status Arrested

Ryan Stewart is the one who accidentally killed Kate Butler.


After being shown up by Kate, he was given the nickname Riana. He later knocked her out, killing her. After approaching Major Moe Kitchener, he put her body in a spare locker from storage.

In 2009, he was arrested for Kate's murder.