When a web celebrity is murdered, Castle and Beckett explore the flashy world of internet fame. But when the killer posts pictures from the crime scene on a photo-sharing site, they realize they are up against a social media sociopath who may strike ... (more)again.

Aly Mawji, Aly Mawji, Brett Weinstock, David Marciano, Derek Krantz, Emily Davenport, James Huang, Jared Kusnitz, Lisa Datz, Matt Pascua, Maya Stojan, Michelle Alegria, Mo Darwiche, Skyler Vallo