James Zinkand re-enters in Season 9, Episode 14.
During Season 9, America was called upon again to vote on which of the six previously evicted Houseguests—Alex Coladonato, Amanda Hansen, Jen DiTurno, Parker Somerville, Jacob Heald, and Allison Nichols—they wanted to bring back into the game.
Ultimately, fans chose Alex, but the twist didn't end there! That's when Julie Chen leaned on the remaining HGs, who she bestowed with the final decision on who would rejoin the game; they could bring back James (who was evicted during Week 4) or a "mysterious Houseguest (who was America's pick, Alex)."
By a vote of 5-3, the house decided to bring James back to compete and the cyclist threw the remaining Houseguests for a loop when he popped out of a large blue gift box—and went on to win that night's HOH competition.
Watch the full episode where James Zinkand returns to the house in Season 9!