Plot summary
When a prison inmate is murdered, Jane and Maura discover that Hoyt is in the prison infirmary, receiving treatment for cancer, and he has offered to give Jane information on murders that he has done years ago. But, when he presents them as a riddle, Maura believes that the cancer has spread to his brain and he doesn't know what he's saying. Meanwhile, Maura is having trouble deciding on a birthday present for Jane while she and Angela try to plan a surprise party for her.
Credits
Adapted from Wikipedia contributors, List of Rizzoli & Isles episodes. HTML formatting and reference markers removed.