Money. Murder. Maths. One man’s inheritance is a killer mystery . . . When reclusive mathematical genius Paul Turner dies suddenly, his half-brother Luke inherits a staggering twenty million pounds—and a mystery that defies logic. Luke barely knew Paul, a man who hid himself away in a dark Cambridge basement. But something about his death doesn’t sit right. It looks like someone went to great lengths to cover their tracks—including a suspiciously rushed cremation and vanishing digital records. As Luke digs into Paul’s past, he discovers encrypted research, a young student with a hidden connection, and a Somali refugee who may hold the key to everything. From secretive college corridors to the high-stakes world of algorithmic trading, the closer Luke gets to the truth, the more dangerous it becomes. Because someone is willing to kill to keep Paul’s secrets buried—and Luke is running out of time.