The Black Book (S12E02)

When a painting by a celebrated landscape artist Henry Hogson goes up for auction, art dealers descend upon the village. Local collectors are outraged when the work sells to an out-of-towner for a princely sum. Soon after, a brutal murderer begins targeting the Midsomer art world. Further complicating the case, the usually collected Barnaby becomes besotted with a pretty art teacher with a dubious past. (Prime Video)