The “Crimes and Curiosity Bundle by S2 Games” with 14 detective and crime games is now available on Humble Bundle.
It includes Broken Sword - Shadow of the Templars: Reforged, Gamedec - Definitive Edition, The Darkest Files, Mercury Abbey, Agatha Christie - Murder on the Orient Express, all three Frog Detective games and Roadwarden, among others.
The tiers are €7.47 (6 games), €10.68 (9 games) and €14.95 (all 14 games) as Steam keys. Part of the proceeds goes to The Global FoodBanking Network. The bundle runs for about 21 more days.
Rewind time with a curated library of iconic and reimagined mysteries with the Crimes and Curiosity Bundle by S2 Games! Experience the award-winning classic adventure Broken Sword - Shadow of the Templars: Reforged with revamped 4K visuals, remastered audio, and endless charm. Investigate historical conspiracies in the post-WWII noir thriller The Darkest Files, solve cyberpunk cases in Gamedec - Definitive Edition, and more. Satisfy your curiosity for solving crimes and help support The Global FoodBanking Network with your purchase!
Keys expire. Please redeem and activate on Steam before May 23rd, 2027.

According to the bundle page, only Broken Sword - Shadow of the Templars: Reforged and Roadwarden list Linux support, the other titles are Windows (some also Mac). Steam keys must be redeemed by May 23rd, 2027.
Source: Humble Bundle