Ghostly sounds in a haunted wood in Wales, silver stolen in a canyon in California and pets disappearing in Vermont – are the suspects human or could animals be involved? Just as smart-phone cameras have revolutionised the way news footage is captured around the globe, so the increasing sophistication of camera trapping technology has led to a surge in the recording of unusual animal behaviours. Big cats, small rats, freaky dogs and scary hogs are all under investigation, but who has committed the crimes and why?