Wisdom's Way/Wisdom's Way 6 - Farnsworth's Folly

There are a series of very amateurish armed bank robberies across Bexfordshire to which DCI Matthew Wisdom, DS Peter Powell and their team are called to. Could these have been carried out by a local team of amateurs, or by a professional team trying to pull the wool over the eyes of the police? Things begin to turn ansty when a garden shed explodes and there is a body found on a cliffside path.