Marrow Jam

Some people would describe Beattie Bramshaw as a pillar of the community. Many would applaud her numerous successes in the bakery competition at the annual village show. A small number might say, if pushed, that they find her a little on the bossy side. But no-one would have her down as a murderer. So why is she being questioned in Dreighton police station after being found in the local allotments, at the dead of night, wielding a kitchen knife just yards away from where local lottery winner, Yvonne Richards, was found stabbed to death? And what does all of this have to do with Doug Sparrow's prize marrows?