There has always been a case of "following the money"-in other words it is usually the most well known member of the cast who is the murderer. Also it does tend to be vicars who do the crime-not many Catholic priests have shown up in the programme by the way. If someone is convicted of a murder before the last half hour or so, chances are they are innocent.New responder here - here are the things I've learned from this show (and you might want to make a drinking game out of this if you're young...some tips may not pertain to your initial question but may be fun/helpful).Take a shot of whatever if:1. You see a full moon2. Hear or see a screeching owl3. Take a shot if:
3a. Someone gets thrown down the stairs
3b. Someone gets thrown out of a window
3c. Someone gets thrown off the ramparts/roof
3d. There is incest involved4. There SHOULD be at least 3 murders - all committed by the same one or two people.5. This show has confirmed the fact that Britain has many amazing actors/actresses, but they only hire the same 30 or so for speaking parts, so don't be surprised if you see people you've seen in other shows/movies. In some ways it's comforting; in others, a lazy effort...and you'll find they use the same ones multiple times.This is just for starters. Methinks you'll get rather sloshed just following these for a while.Oh, and to answer your question....pay attention to the first 5 minutes or so. There is always at least one or two who make out right threats = they will die and are not the bad guys. There will be others who chime in and seem innocuous at first = the killers. No disrespect to the initial responder, but that is how I see it.--------Sorry, can't help myself (new post)...Having watched CSI (Florida and Las Vegas...mostly filmed around the same time) and Dexter for many years - I can't believe Barnaby and Jones don't secure the crime scene for the true forensic experts to come in at the scene of the crime.. Oh no. They let any hysterical person even remotely related to the dead person barge in.