
Strange, rhymed advertisements in the TIMES unsettle three London gangsters - and rightly so, because soon the first of them are killed. The mysterious killer also catches a shady lawyer. Higgins and Lane find out that the key to the crimes is an unsolved diamond heist from jeweler Bolden. It looks like those involved are fighting over the loot. Eventually, it turns out that the "robbery" was actually a set-up insurance scam that Bolden was personally behind and that killed his employee. Shortly before the last survivor is sent to the afterlife, Higgins and Lane are able to confront the "invisible" murderer.
Inspektor Higgins

Barbara Lane

Sir John

Ann Pattison
William Bolden

Peggy Lynch

Lady Upperworth

Miss Thinwhister

Stephen Scott
Ruth Bolden

Tom Averil

Mr. Nelly

Robert Frazer

Taxi driver
