Elementary
All In
S4 E19:
A mysterious woman who organizes illegal, high-stakes poker games arrives on Holmes and Watson's doorstep and tells them her life is in danger claiming to be a former associate of Mycroft, Sherlock's brother. However, as the pair investigates, Joan becomes suspicious that their new client isn't being truthful.
Starring
Samantha Quan, Sepideh Moafi, Tim Guinee