Gerald Pembroke owns and runs a mushroom farm in the idyllic country setting of Luddensley village. The supermarket buyers are forcing his prices down to subsistence levels, his attention obsessed wife has been engaged in a string of affairs with younger men and to top it all he discovers that one of his employees is using his facilities to grow hallucinogenic Liberty Cap mushrooms as a sideline.
After further pressure from his buyers and mounting maintenance bills, Gerald temporarily turns the entire facility over to the production of Liberty Caps and finally starts making serious money.
Unfortunately the local drug dealers, now bereft of their clientele, don't quite see it Gerald's way. And where the drug dealers go, the police are never far behind.
After a visit by the local constabulary and in a fit of drunken panic, Gerald disposes of his entire crop down the old farm well, inadvertently contaminating the water supply to the local spring water bottling plant, and the entire village population soon discover the harsh delights of hallucinogenic paranoia.
A bizarre set of circumstances then ensues that by comparison makes the Salem witch trials look like a fun day out.
In The Mushroom Man John Vault assembles another array of delightfully dysfunctional characters and plunges them way out of their depth into nightmare situations. There's comedy, tragedy, villainy, at least three buckets of blood and a huge body count. Who could want more?