CW | 8:00 pm

As fans are painfully aware, this is the final season of "Arrow," but tonight's new episode, "Green Arrow and the Canaries," is a backdoor pilot for a planned (but not yet officially ordered) spinoff starring Katherine McNamara as Mia Queen, daughter of Oliver Queen and Felicity Smoak. Set in Star City, circa 2040, the story finds Mia's idyllic life upended by the unexpected arrival of Laurel Lance and Dinah Drake (Katie Cassidy, Juliana Harkavy), who are tracking a kidnapping victim.