A collection of three crime mysteries by Brian L. Porter, now available in one volume!

Behind Closed Doors: In the autumn of 1888, amidst the terror caused by Jack the Ripper's notorious murders in London, a lesser-known killer lurks in the shadows. Unknown to the public, murders are taking place aboard the carriages of the London Metropolitan Railway. Inspector Albert Norris is tasked to apprehend the elusive killer, with clues in short supply and the killer's motive a mystery. Will he be able to unravel the inexplicable series of murders and bring the culprit to justice before he strikes again?

Purple Death: Detective Inspector Sean Connor faces a daunting task. A serial killer is terrorizing Richmond-on-Thames, with the murders all committed with a unique poison linked to the infamous Borgia family. Each victim seems to be unrelated, clues are scarce, and the killer is always one step ahead of them. With the help of Sergeant Lucy Clay, Connor must piece together evidence to find the mysterious "Chocolate Woman" and stop the killing spree before another life is lost.

The Nemesis Cell: A group of women gather at a Belgian fertility clinic where Doctor Margherita Dumas offers a revolutionary treatment for their infertility. A year later, each of the women give birth to a healthy baby boy. Thirty years later, a mysterious killer begins to wipe out the children born as a result of Dumas’ programme. Detective Inspector Harry Houston and his team are assigned to piece together the case and bring the killer to justice. But with both time and clues in short supply, can Harry and his team find the link between events of the past and the deaths of the innocent progeny of Clinique Sobel?