Stitchers 2×09 “The Guest” – Kirsten makes major headway in finding her father, on an all-new episode of “Stitchers” airing on Tuesday, May 17th, on Freeform. Mitchell Blair (guest star John Billingsley) directs Kirsten to shut down all investigation into finding her father. But Kirsten has finally made contact with someone she thinks can lead her to him. To gain her source’s trust, she tries to explain her role in the Stitchers program, without actually revealing the program’s nature. Treading carefully, Kirsten recounts the team’s current case, in which a series of murders is tied to a wildly popular new app.