CinemaBlend The latest episode of ABCâs The Rookie police procedural finally introduced Nathan Fillionâs John Nolanâs ex-wife, Sarah, played by Bones alum Emily Deschanel. The actressâ debut on the Fillion-lead drama was one to remember and ended with hope that this wonât be the last time fans see her. The Rookie was off for two weeks and the new episode finally picked up from a cliffhanger where Johnâs son Henry (Zayne Emory) collapsed and Sarah quickly came to visit as the ex-couple argued about what to do with Henryâs worsening condition. With Sarah coming into the picture, fans finally got to see the mysterious ex that John every so often mentioned in passing. In addition, we got to know more about their relationship, and that the two of them had Henry when they were his and wife-to-be Abigailâs age, after only being married a few months.