A fast moving unusual crime story set in Victorian London when in March 1882, Inspector James Hadley, assisted by Sergeant Cooper, are assigned by the Commissioner to investigate the unexplained death of his good friend, Mrs Abigail Hook, a newly married widow, and the mysterious disappearance of her husband. Inspector Hadley and Sergeant Cooper begin the investigation, but are diverted, on the orders of the Commissioner, when another wealthy widow, Mrs Lucinda Stafford, dies in similar circumstances soon after marrying Doctor James Stafford, who also disappears after his wife's funeral. Mr Hook and Doctor Stafford cannot be traced by the detectives and the Bank accounts, held by their respective wives, have had all the available funds withdrawn in cash. A short time later, Mr Hook and Doctor Stafford meet and journey together to Paris, where they enjoy a vibrant social life before travelling to Geneva where they open accounts with a Swiss Bank. After their return to London they are quickly tracked down by the detectives and a violent confrontation ensues before they are arrested and brought to trial for murder.