The Mutation Situation - S2-E1
Trivia: At the very end of the episode, a squirrel drinks some mutigen and then suddenly looks back at the camera suddenly in a dramatic fashion. This is a reference to the" Dramatic Chipmunk" meme -the squirrel moves in the exact same way with similar music.
Trivia: Although Laurel is a couple of years older than Sara, Katie Cassidy is only about a month older than Caity Lotz.
Trivia: The paint job of the Zhu Li is reminiscent to the way ships were painted in WWI. The Americans and the British did this because they thought it would make it more difficult for the Germans to estimate their speed and heading.
Trivia: This show pays many homages to the 1968 film Bullitt which was also set in San Francisco. Firstly officer Rebecca Madsen's car is the exact same make, colour, and model Mustang that Steve McQueen drove in Bullitt. Also the final episode (Tommy Madsen) features a car chase which recreates many shots from the 1968 film. It even includes the green Beetle Volkswagen coming down the hill as seen in the movie.
Trivia: Dio in this episode drinks Cronenberg Whisky, just like in the manga. The fictional brand is most likely a homage to the director David Cronenberg, especially given the bit of 'body horror' appearing in this arc.