US actor Sam Huntington is to guest star in the upcoming fourth season of the science-fiction series \"Warehouse 13,\" Syfy said Tuesday. Huntington is best known for playing the werewolf Josh on the show \"Being Human.\" He will play a jazz musician named Ethan in Season 4 of \"Warehouse 13,\" currently being shot in Toronto. \"We love bringing other Syfy icons on to \'Warehouse 13,\'\" the show\'s Executive Producer Jack Kenny said in a statement Tuesday. \"There\'s something they just \'get\' about the genre. People like [past guest stars] Kate Mulgrew, Lindsay Wagner, Jaime Murray and Rene Auberjonois know that delicate balance we play between humor, drama and action. And Sam Huntington is a natural fit for us. Funny, charming, smart and compelling, he plays Ethan -- a young jazz musician, desperate to leave his mark on the world of New Orleans jazz -- even if it means a great sacrifice.\"