12 cards where the set is “mkm” and the card types include “case”

Case of the Burning Masks (Murders at Karlov Manor #113)
Case of the Crimson Pulse (Murders at Karlov Manor #114)
Case of the Filched Falcon (Murders at Karlov Manor #44)
Case of the Gateway Express (Murders at Karlov Manor #8)
Case of the Gorgon's Kiss (Murders at Karlov Manor #79)
Case of the Locked Hothouse (Murders at Karlov Manor #155)
Case of the Pilfered Proof (Murders at Karlov Manor #9)
Case of the Ransacked Lab (Murders at Karlov Manor #45)
Case of the Shattered Pact (Murders at Karlov Manor #1)
Case of the Stashed Skeleton (Murders at Karlov Manor #80)
Case of the Trampled Garden (Murders at Karlov Manor #156)
Case of the Uneaten Feast (Murders at Karlov Manor #10)

Though this query has ended, its relics still slumber in New Argive.