You can check them out, along with the official synopsis for the episode, below.
The episode will introduce Donna Smoak, Felicity's mother, played by NYPD Blue's Charlotte Ross. Nolan Funk will also guest star as Felicity's ex-boyfriend, while JR Ramirez shows up as Wildcat, training Laurel.
Michael Schultz, who directed Car Wash, The Last Dragon and The Jerk, Too, is behind the camera for this one, as he was for previous Arrow episodes "City of Blood," "The Scientist," "The Undertaking" and "Damaged."
You can check out the official synopsis below.
"The Secret Origin of Felicity Smoak" — (8:00-9:00 p.m. ET) (TV-14, DV) (HDTV)
CHARLOTTE ROSS ("NYPD BLUE") STARS AS FELICITY'S MOTHER — When a cyber attack brings Starling City to its knees, Oliver (Stephen Amell) and Felicity (Emily Bett Rickards) are pushed to their limits to contain the destruction. Life gets even more complicated for Felicity when her mother, Donna (guest star Charlotte Ross), stops by for a surprise visit. Meanwhile, Ted Grant (guest star JR Ramirez) questions Laurel's (Katie Cassidy) motives, and Thea (Willa Holland) buys an apartment with Malcolm's (John Barrowman) "estate" money, which infuriates Oliver. Nolan Funk guest stars as Felicity's ex-boyfriend. Michael Schultz directed the episode written by Ben Sokolowski & Brian Ford Sullivan (#305). Original airdate 11/5/2014.