The ending of '28 Years Later' explained and how it sets up the sequel, 'The Bone Temple'

Alfie Williams as Spike and Aaron Taylor-Johnson as Jamie in "28 Years Later."

Sony Pictures Releasing

• "28 Years Later" follows a father and son who have survived the Rage Virus that has ravaged Britain.
• It's essentially a coming of age story about a 12-year-old boy named Spike.
• The film has a surprising ending for Spike. Here's what it could mean.

Warning: Major spoilers ahead for "28 Years Later."

Fans waited nearly 20 years for "28 Years Later" —...