In the Grey’s Anatomy Halloween episode (S16E06), the doctors deal with literal skeletons and emotional ghosts. Pac-North: Literal Skeletons in the Closet

: Celebrating the win, Alex and Jo head to the courthouse to get married "for real" after discovering their previous marriage wasn't legally binding. Jo pranks him during her vows by claiming she's pregnant before admitting it's a "scare". Meredith’s Jailbird Reality Check

: Paula's story—losing her kids to foster care because she couldn't afford bail after working two jobs—gives Meredith a much-needed perspective shift.

: Despite the "haunted" vibe and an ICU crisis involving a fridge full of bad blood, the investors are actually impressed by Alex’s ability to handle total chaos and grant him the funding.

: Stuck in jail for skipping community service, Meredith meets Paula , a single mother whose life has been upended by a broken system.

: Upon her release, Meredith anonymously posts Paula’s bail. Grey Sloan: Family Drama and Halloween Spirits Whistlin' Past the Graveyard - Grey's Anatomy Universe Wiki

: Alex Karev’s attempt to impress investors at Pac-North hits a massive snag when construction workers unearth a mass grave on the hospital grounds—remains from its days as a mental hospital.