The Cartographer of Lies: 2

What if there's a map for exactly how to destroy someone from the inside - and it's already been used seven times?Dr. Mara Voss proved an AI could be a murder weapon. She didn't expect the method to have an inventor.Seven deaths. Six years. Six cities. Every one ruled natural - until an algorithm flags the pattern, and Mara recognizes it instantly.She's seen this shape before. She just didn't know it had a history - that someone designed it, refined it, used it long before an AI ever touched it. And that person is still out there.Now the precedent Mara built to convict a killer is being argued out of existence in court. And the case keeps dragging her back to the one file she's kept sealed for seven years: her sister's.The perfect crime leaves no evidence, because it was never meant to look like a crime.