Apple TV+'s thriller returns with more sci-fi creepiness, nuanced social commentary and black humor. And perks like fruit leather.

Season 1 ended three years ago on a cliffhanger, with the innies staging a rebellion and discovering disturbing truths about their outies. Season 2 picks up in the aftermath. The innies are still at Lumon.

Severance Season 2 will delve deeper into corporate culture and the concept of a work-life balance. The sophomore season of Dan Erickson’s thriller series, which centers around a surgical procedure that separates the work self from the off-hours self,

Fortunately, “Severance” returns to Apple TV+ on Friday, and its makers seem to have used every second of the absence productively. The season takes new turns while remaining the most ambitious, batty and all-out pleasurable show on TV, an M.C. Escher maze whose plot convolutions never get in the way of its voice, heart and sense of humor.

Here's what you should remember from the first season of "Severance" and how certain moments and symbols could foreshadow what happens in Season 2.

Adam Scott heads up the cast of ‘Severance’ season 2 as Mark Scout, the Lumon employee who has the severance procedure following the loss of his wife. He’s seen here at the premiere of “Hot Tub Time Machine 2” on February 18, 2015 in Westwood, California. He previously starred in ‘Krampus,’ ‘The Overnight,’ and ‘Parks & Recreation,’ among others.

The acclaimed Apple TV+ series is making its long-awaited return. A second season was filmed over three years.