The end of season finale usually features Flambeau and they tend to be one of the best episodes, although, last season's Flambeau episode was marred with some dodgy green screen work.
Flambeau has been charged with murder and has requested Father Brown as his spiritual adviser. The victim is a business associate of Flambeau, Flynn Hardwick despite protesting his innocence, he pleads guilty to his murder and is sentenced to hang.
Bunty and Mrs McCarthy are not convinced of the behaviour of Hardwick's widow and both believe that he is still alive. Father Brown is convinced that all this is an elaborate plan by Flambeau. There is something in the prison he wants, something valuable.
As always Flambeau the master criminal is always one step ahead and Father Brown is not far behind always hoping that Flambeau will one day redeem himself. However Flambeau might have really landed himself in it this time with his complex schemes as his execution is brought forward.
Flambeau and Father Brown again make a great team and it is a nice way to wrap up the fifth series which has gone well despite the cast changes.