Night of Blood is a classic WFRP adventure and it’s free on Drivethru RPG.
I partially ran this one in college– the players didn’t take the bait due to ‘running away from some baron’s men’ factor and avoided the fun. There are many, many adventures influenced by this one, including 2-3 DCC ones I can think of off the top of my head that are now ALSO classics.
I haven’t picked up WFRP 4 yet, but it’s bound to happen eventually.