Belton Bridge, Leigh-on-Sea, Essex

There were still no leads into the disappearance of Marvin, chairman of the local birdwatching society.

But Frank had swiftly grabbed power, continued to lay flowers at his old rival's favourite spots and was out with his pal Bernard using what looked suspiciously like Marvin's telescope, Marvin's tripod and Marvin's camouflage rucksack.