33 cards where the set is “mkm” and the collector number >= 390 and the collector number <= 422

No Witnesses (Murders at Karlov Manor #390)
Tenth District Hero (Murders at Karlov Manor #391)
Unyielding Gatekeeper (Murders at Karlov Manor #392)
Coveted Falcon (Murders at Karlov Manor #393)
Cryptic Coat (Murders at Karlov Manor #394)
Lost in the Maze (Murders at Karlov Manor #395)
Proft's Eidetic Memory (Murders at Karlov Manor #396)
Steamcore Scholar (Murders at Karlov Manor #397)
Barbed Servitor (Murders at Karlov Manor #398)
Deadly Cover-Up (Murders at Karlov Manor #399)
Hunted Bonebrute (Murders at Karlov Manor #400)
Illicit Masquerade (Murders at Karlov Manor #401)
Outrageous Robbery (Murders at Karlov Manor #402)
Connecting the Dots (Murders at Karlov Manor #403)
Expedited Inheritance (Murders at Karlov Manor #404)
Krenko's Buzzcrusher (Murders at Karlov Manor #405)
Lamplight Phoenix (Murders at Karlov Manor #406)
Pyrotechnic Performer (Murders at Karlov Manor #407)
Archdruid's Charm (Murders at Karlov Manor #408)
Axebane Ferox (Murders at Karlov Manor #409)
Hide in Plain Sight (Murders at Karlov Manor #410)
Undergrowth Recon (Murders at Karlov Manor #411)
Assassin's Trophy (Murders at Karlov Manor #412)
Blood Spatter Analysis (Murders at Karlov Manor #413)
Doppelgang (Murders at Karlov Manor #414)
Drag the Canal (Murders at Karlov Manor #415)
Ill-Timed Explosion (Murders at Karlov Manor #416)
Kylox's Voltstrider (Murders at Karlov Manor #417)
Leyline of the Guildpact (Murders at Karlov Manor #418)
Relive the Past (Murders at Karlov Manor #419)
Treacherous Greed (Murders at Karlov Manor #420)
Urgent Necropsy (Murders at Karlov Manor #421)
Cryptex (Murders at Karlov Manor #422)

It is the moment of discovery, the triumph of the mind, and the end of these results.