During a regular police investigation he becomes involved with a detective and begins to develop feelings for her, which beyond basic desires are unusual for a Thirteen. Eventually, the detective is herself murdered by a slow-acting toxin, and Marsalis decides to track down her killer himself.
As part of his regular police work, he becomes acquainted with a detective and begins to form romantic connections with her, which are unusual for someone of his age group. The detective's life is tragically cut short when she is poisoned by a slow-acting toxin, prompting Marsalis to take matters into his own hands.