
Thanks to Marko for the heads up.
TV Line have released a first look at Shadowhunters Katherine McNamara as street fighter Maya, who'll make her debut in this episode.

ARROW
“Unmasked” — (8:00-9:00 p.m. ET) (TV-14, LV) (HDTV)
FELICITY MAKES CERTAIN DECISIONS FOR HER FAMILY — Felicity (Emily Bett Rickards) stands by her recent decisions regarding her family. Meanwhile, Diggle (David Ramsey) and Lyla (Audrey Marie Anderson) continue to look into the Dante painting that Curtis (Echo Kellum) found. Alexandra La Roche directed the episode written by Oscar Balderrama & Beth Schwartz (#708). Original airdate 12/3/2018.