SK1, known in the US as Serial Killer 1, is a 2014 French thriller drama film directed by Frédéric Tellier. The term "SK1" is a codename given by the police to the first serial killer who was identified and arrested via DNA analysis in France.

Raphaël Personnaz is a French actor. He has appeared in more than fifty films since 1998. He was awarded the Prix Patrick Dewaere in 2013.