We finally have the title and the air date. From ABC:
OFF THE MAP – “On the Mean Streets of San Miguel” – Mina struggles with her own moral code after learning the true identity of her patient, while Lily learns more about Ben’s past and is tested on her first trip into the city, on “Off the Map,” WEDNESDAY, FEBRUARY 2 (10:00-11:00 p.m., ET) on the ABC Television Network. (ABC/MARIO LOPEZ) ED BEGLEY JR., JASON GEORGE, MAMIE GUMMER
There are some photos from the episode at Spoiler TV.