Uncanny X-Men (1963 1st Series) #139

Direct edition. "...Something Wicked this Way Comes!" Part 1 of 2. Guest-starring Alpha Flight's Vindicator, Shaman, and Snowbird. Story by Chris Claremont and John Byrne. Art by John Byrne and Terry Austin.

Kitty Pryde joins the team and soon finds she live to regret her decision. Meanwhile, Wolverine and Nightcrawler head to Canada and come face-to-face with one of the deadliest killers in the Marvel Universe.