Bosch: Legacy season 3 will significantly expand Michael Connelly's television universe, with the introduction of Renee Ballard, as a cold case investigator, who seeks Harry Bosch's help with a grisly murder case. In addition to this, there will be a spin-off focused on Bosch's ex-partner in the LAPD, Jerry Edgar. With the expansion of the Bosch-verse, there is one other character who would fit perfectly into the mix, and that is Bosch's half brother, Mickey Haller, who is better known as The Lincoln Lawyer.