FBI BAU Special Agent Ruby Hunter remains haunted by "The 13 Killer," the serial killer who took everything from her—including her partner—before she put him away for good. Yet somehow, though behind bars, new bodies are showing up with his trademark 13 signature. Is he behind it?

If I Return is book #5 in a new series by #1 bestselling mystery and suspense author Molly Black, whose books have received over 2,000 five-star reviews and ratings.

Victims of a new killer are being found with a mysterious signature left at the crime scene: a single King from a deck of cards left on their chests.

Why?

Ruby senses the puppetry of the 13 killer, but the connection remains elusive.

Until, in a twist she did not anticipate, all becomes shockingly clear.

But will it be too late?

A complex psychological crime thriller full of twists and turns and packed with heart-pounding suspense, the RUBY HUNTER mystery series will make you fall in love with a brilliant new female protagonist and keep you turning pages late into the night.