2019
S02E13 finale
A former CIA operative (Cumming), who has since built a "normal" life as a gifted professor and writer, is pulled back into his old life when the NYPD needs his help to stop a serial killer on the loose.
Dylan and Lizzie work to uncover why an Olympic-hopeful figure skater is killed while on the ice. Also, Ryan's case heats up and lands him and Dylan in unusual circumstances and Julian comes to understand why an old acquaintance has returned to New York.