J. R. Walton

For thirty years, Mara Kessler has been the exception. Four generations of Kessler women were diagnosed with dissociative identity disorder - hospitalized, hidden, buried under sealed medical files and a family that stopped hosting reunions where the subject might come up. Mara tested clean at seven, at seventeen, at twenty-seven. She built a career finding what other people miss: buried code, hidden intrusions, ghosts inside the machine.
By every clinical measure, she is free. Then a ransomware attack cripples her hometown's hospital, and the encryption key contains a phrase from her grandmother's company motto - a company that closed before Mara was born. The deeper she digs into a hidden archive documenting a century of forgery, fraud, and now full-scale cyber-extortion, the more the evidence points to a single operator working through every generation under a dozen different names.
The closer she gets to the truth, the more hours she loses. And the more she has to consider that her "clean" diagnosis was never a medical fact - it was the syndicate's best-kept alibi. Some inheritances skip a generation. Some just wait for the right host.