This was followed by three more novels, "Bum Rap" (2015), "Bum Luck" (2017), and "Bum Deal" (2018), that included characters from the "Solomon vs. Lord" series. In "Bum Rap", Lassiter works with Lord to find a way to exonerate Solomon who has been charged with murdering a Russian club owner. In "Bum Luck", Lassiter bizarrely threatens to kill his own client who has just been acquitted of murder. Solomon and Lord fear that Lassiter has suffered brain damage (chronic traumatic encephalopathy) from his days as a football player. "Bum Luck" also introduced Dr. Melissa Gold, the neuropathologist treating Lassiter, who later becomes his fiancée. In "Bum Deal", Dr. Gold administers experimental brain treatments to Lassiter who has been appointed a special prosecutor to try a high-profile murder case arguing against Solomon and Lord.