The Armchair Detective's Last Ever Case · Series One

"All good things must come to an end."

Old Tom begins to realise that his time with Trench is nearly over, his work almost complete.

But first, there is their most bizarre mystery yet to solve. As new owners prepare to take over the Stokeham Herald, a strange black box sends Trench on a seemingly frantic wild goose chase throughout Stokeham. There is a rising familiarity behind all the rushing about - and Old Tom starts to sense a hidden agenda...