Gates ultimately finds out about Castle's mob ties and has no choice but to let him go from the NYPD. What does this mean for Beckett and Castle? Castle is embracing a new profession -- a private investigator.
Thankfully, Beckett only ended it to protect Castle, which meant that a reunion was inevitable. And in the midseason finale for season 8, Castle and Beckett celebrated their first wedding anniversary with the greatest gift of all: reconciliation.