Hidden Motives

About Vigilante: Hidden Motives, from BoardGameGeek:

In Hidden Motives, your super hero teams will gain a new secret hideout. The new "Lair" mechanic adds asymmetric abilities for each player including unique new actions that each player can take. In addition to a variety of lairs, Hidden Motives adds a ton of new content to further increase variability, including Scenarios, Heroes, Villains, Identities, Equipment, and more! New abilities add a new dimension to the game, without increasing complexity. This is an expansion, that requires Vigilante to play. -description from designer