Grinning from Ear to Ear

Synopsis
Batwoman and Luke are on the trail of a villain targeting social media mavens. Sophie gets an unexpected visit from her mother, and Mary offers her expertise to assist Kate. Jacob Kane is approached to make good on a favor, while Alice focuses on her plans for retribution.

Main/Featured Characters

 * Batwoman (Kate Kane)
 * Alice (Beth Kane)
 * Sophie Moore
 * Mary Hamilton
 * Luke Fox
 * Jacob Kane
 * Reggie Harris
 * Reggie Harris

Villains

 * Ethan Campbell (August Cartwright)
 * Mouse (Johnny Cartwright)
 * Duela Dent

Other Characters

 * Evelyn Dent
 * Veronica May (Myrtis Dinker)
 * Diane Moore
 * Bobby Reeves
 * Kimberly Wright
 * Bobby Reeves
 * Kimberly Wright

Weapons

 * Batarang
 * Fear Toxin

Events

 * Slashionista killing spree.

Locations

 * Earth
 * United States of America
 * Gotham City
 * Wayne Tower

Trivia

 * When Veronica is suspended atop the vat of chemical, this is a reference to Fox Gotham finale where Barbara Gordon is suspended atop a vat of chemical by Mr J.
 * Duela Dent's uncle Harvey is mentioned. In the DC Comics, Harvey Dent is a frequent Batman villain.
 * This episode reveals that Reggie Harris is actually incarcerated for the murder of Lucius Fox.
 * It is heavily implied that he is innocent.
 * The scars near the mouth that look like a smile are very similar to the victims of The Joker.
 * The fear gas used on Mouse with a scarecrow logo is a nod to the DC Comic villain Scarecrow.
 * The scarecrow was already mentioned earlier this season but it is unknown if he has any relation with the fear gas.