Lisa Ann Walter is back on the Alex Trebek Stage this week, and the timing could not be sharper. Celebrity Jeopardy! All Stars moves into its semifinals and finals over the remaining four games, with the last nine players competing for their charities.

The semifinals and final air on ABC at 8:00 p.m., or 7:00 Central, and Canadian viewers should check local listings for the extra game days this week. Walter is matched against Katie Nolan and Mina Kimes in the semifinal game, and she is not the favorite against either one.

That matters because Walter returns after a Tournament of Champions appearance that was rough by any measure: she had three right and finished at $-2,600. This time, she is trying to survive a bracket that already showed how dangerous the field can be. Mina Kimes led everyone in the quarterfinals with 63 buzzer attempts, answered 31 questions correctly and upset Andy Richter in a runaway.

Walter’s earlier showing is part of the reason this matchup draws attention. A player who struggled in the Tournament of Champions now gets another shot on the same stage, while Nolan arrives with the kind of expectation that usually follows a strong read on the game and Kimes comes in after controlling the buzzer in the quarterfinals. The Unified Prediction Model likes Nolan’s chances, and the prediction here is that Kimes wins Game 1.

Celebrity Jeopardy! All Stars is built around charity, which gives every correct response a second audience beyond the scoreboard. For Walter, the question is not whether she belongs back on the stage. She does. The question is whether she can turn a difficult earlier run into enough momentum to stay alive when the games matter most.