Victims are going missing, clearly victims of a serial killer, and FBI Special Agent Ilse Beck suspects this is no ordinary killer—with no ordinary M.O. With the clock running out, can she crack the case in time to save the next victim?

In this bestselling mystery series, FBI Special Agent Ilse Beck, victim of a traumatic childhood in Germany, moved to the U.S. to become a renowned psychologist specializing in PTSD, and the world's leading expert in the unique trauma of serial-killer survivors. By studying the psychology of their survivors, Ilse has a unique and unparalleled expertise in the true psychology of serial killers. Ilse never expected, though, to become an FBI agent herself.

As Ilse goes deeper down the rabbit hole, she soon realizes something isn't adding up. She must put her brilliant mind to the test to make sense of all the evidence—including the clues that may be hiding right under her nose.

Will she crack under the pressure? And will it be too late?

A dark and suspenseful crime thriller, Not Like Before is a breathtaking page-turner, an unputdownable mystery and suspense novel. A compelling and perplexing psychological thriller, rife with twists and jaw-dropping secrets, it will make you fall in love with a brilliant new female protagonist, while it keeps you shocked late into the night.