S12E20Grey's Anatomy season 12 episode 20: Trigger Happy
Aired 21 April 201643 minRated TV-14
Where to watch Grey's Anatomy Season 12 in Australia
Grey's Anatomy season 12 is streaming in Australia on Disney+ (subscription, listed for the whole show).
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Availability checked 16 November 2026.
What happens in “Trigger Happy”
The doctors work frantically to save a young boy who was accidentally shot. Meanwhile, Arizona is upset when Callie tries to make an important decision about Sofia’s future without consulting her
Episode summary: TMDB.
Before you watch
- It is episode 20 of 24 of season 12, so watch episodes 1 to 19 first.
- It runs about 43 minutes.
- Directed by Zetna Fuentes, written by Zoanne Clack.
- TMDB users rate it 8.1 out of 10 (12 votes).
Grey's Anatomy trailer
The official trailer for the series (no preview of this episode has been published).
Play video: Grey's Anatomy trailer
Cast and crew of this episode
- Director
- Zetna Fuentes
- Writer
- Zoanne Clack
- Guest stars
- Nina Rausch as Sheila DavisBrianne Tju as StacyDavid Fierro as JamesAniela Gumbs as Zola Grey ShepherdRyder Goodstadt as Derek Bailey ShepherdSamantha Sloyan as Penelope BlakeWilmer Valderrama as Kyle DiazKatie Harker as Paramedic
Credits: TMDB.
More from Grey's Anatomy Season 12
Previous · S12E19It’s Alright, Ma (I’m Only Bleeding)14 April 2016
Next · S12E21You're Gonna Need Someone on Your Side28 April 2016Every episode of Season 12Grey's Anatomy episode guide
Episode names, air dates, runtimes, stills and ratings: TMDB. Air dates are the first broadcast anywhere; where it streams is our daily Australian check.