Grimm: “Bad Teeth” (Episode 2.1)

The episode begins with the usual Grimm carnage, this time in the form of a blood-soaked shipping crate aboard a boat in Portland’s harbor. Security guards find mangled corpses and French writing in blood on the walls before they are attacked by an unknown creature hiding in the crate. This makes for one of the more grotesque crimes scenes in the series, setting up season two with an even darker tone than the previous season.
The show then picks up immediately where season one ended, with Detective Nick Burkhardt (David Giuntoli) attacking the evil Kimura (Brian Tee) when a mysterious woman in black breaks into the house. The woman (Mary Elizabeth Mastrantonio) wounds Kimura and reveals herself to be Nick’s mother Kelly, who was assumed to have been killed in a car crash 18 years earlier.
Police arrive at the house to find a barely conscious Kimura and a seriously rattled Nick (Kelly has disappeared in a fashion uncannily similar to Christian Bale’s Batman). Kimura is booked off to jail by Nick’s boss, Captain Sean Renard (Sasha Roiz), leaving Nick and 18 years of unresolved mommy issues alone in the house.
Kelly reappears to explain that she, like Nick, is a Grimm. Through inheriting the Grimm ability to see Wesen (a diverse group of parahuman creatures who can blend into human society unnoticed) she has been in constant danger and a target for Reapers. Knowing she was being hunted 18 years earlier, she left Nick in the custody of his Aunt Marie to protect him. She also sent her husband and her friend away in a car to keep them safe, but they were killed in an “accident” by the Reapers instead. Her friend’s mangled body was mistakenly identified as Kelly’s own, which is why Nick believed her to be dead for nearly two decades.