Appelman would go to film and television. He would appear in 2013's Kill Your Darlings as Luke Detweiler. His first lead role was in 2014's A Midsummer Night's Dream as Demetrius. In 2016, his next film will be an untitled Joshua Marston Project as Malcolm. In season 15 of Law & Order: Special Victims Unit, Appelman guest stars as Officer Jimmy Hamilton in two episodes. He guest starred in season 2's Sleepy Hollow as Joe Corbin. He had a recurring role in season 3's Beauty & the Beast as Alton Finn. On August 21, 2015, it was announced that Appelman was bumped up to series regular on Sleepy Hollow as Joe Corbin. Appelman has previously been featured in Sheri Wilner's play, The Miracle of Chanukah, and Patrick Gabridge's play Christmas Breaks for public radio show and podcast, Playing on Air.