Star Trek: Year Five (Star Trek: Year Five #21)

With Spock still missing, the crew of the Enterprise needs to figure out where-and when-he is if they want to save the future! Meanwhile, on Vulcan, Spock is faced with a choice that won't only change his life, but Vulcan society as he knows it! The final voyages of the original mission continue in this episode from writer Brandon Easton (Transformers: War for Cybertron, Thundercats) and artist Silvia Califano (Star Trek: Year Five, X-Files: Case Files)