Whiffy Newton in The Mystery of the Marble Beach Mugger

It's summer at last! And the mysterious Agency for Creative Enterprise has packed Whiffy and his father off on an all-expenses-paid holiday to sleepy Marble Beach so that Dr Newton can finish testing his latest loopy invention, The Hydrolator.

But Marble Beach's residents are being terrorised by a fiend who strikes at the worst time and place - dinnertime and in the vicinity of Marble Beach's only ...