Sid wakes up in bed with a hangover and brewery heiress Grace Fitzgerald but soon discovers that the brewery has burned down and her father Gabriel Kane killed. Unlike her step-sister Rose, Grace believes it was arson with sacked employee Owen Brunt the chief suspect. However when a witness claims to have seen Grace enter the brewery and she is charged with murder Sid cannot give her an alibi as he learns that she is married. Another murder follows before Father Brown solves the crimes.
Rather average FB episode with an okay mystery. It's quite perplexing, there's some good suspects but it doesn't stand out as a great entry. However, there's a nice twist at the end.