The title of writer/director/producer Carlos V. Gutierrez’s feature debut Locked In comes with multiple meanings. Most obviously it refers to the self-storage centre which here, as also in Shane Carruth’s Primer (2004), Michael Craft’s Storage (2009), Johannes Roberts’ Storage 24 (2012), Tom DeNucci’s Self Storage (2013) and Matt Winn’s The Hoarder (2015), serves not only…