Key Evidence:
All three suspects' fingerprints and DNA were found at the crime scene. Petunia's presence is explained by her daily work as church warden, and Gabby's by the afternoon bell-ringing competition. Harold's presence, however, contradicts his claim of not visiting the church in 10 years.
Harold's testimony contains a contradiction: he claims to have fallen asleep at home waiting for the vicar to return, yet also claims to have seen who the vicar left the pub with.
Gabby's wrist injury was severe enough to force her withdrawal from the competition and prevent her from driving. She left at 9:50 p.m. with her sister for a lift home to a different village. With no transportation, she couldn't have returned to commit the murder.
Timeline for Petunia provides an alibi: she was last seen with the vicar at 9:45 p.m., spotted leaving the church by Gabby at 9:50 p.m., and arrived home by 9:55 p.m., where she was with her husband. The murder occurred between 10:00 and 11:00 p.m.#
Confession:
While I was waiting for the vicar to come home, I saw Petunia and the vicar leaving the pub and going into the church. Petunia looked upset. Minutes later, she left on her own, now red-faced and crying. I mean, for goodness' sake, how much more of the vicar's torment could this village take!
I was already fuming about him stealing my cat and was now full of Dutch courage from the whiskey, so I decided it was time to confront him. When I got to the church, he said, "I'm sorry and understand why you're upset, but I'm not forcing the cat to stay in the church; it's making its own choice." He then had the nerve to say, "Maybe you should try a different pet, one that's easier to look after, like a goldfish."
Well, that was the straw that broke the camel's back for me. By this point, the vicar was standing on a chair, messing around with the bell ropes. No more inspiration was needed.