13:45Father BrownSeries 5Episode 10: The Alchemist's SecretBBC One Duration: 45 minutes Thu 12th Jan 2017, 13:45 on BBC One Northern IrelandPeriod drama series. Father Brown must investigate a 300-year-old secret hidden in a university in order to save an old friend.ContributorsDirector:Simon GibneyWriter:Rob KinsmanMusic:Debbie WisemanProducer:Caroline SlaterExecutive Producer:Will TrotterFather Brown:Mark WilliamsMrs McCarthy:Sorcha CusackInspector Mallory:Jack DeamBunty:Emer KennyProfessor Hilary Ambrose:James LaurensonTimothy Hargreaves:Richard SouthgateMalcolm Pendle:Danny WebbStanley Crawford:Steve FurstVictoria Nicholson:Emerald O'HanrahanThe Architect:Michael VivianThe Alchemist:Darren StrangeSergeant Goodfellow:John BurtonGenresDramaCrimeBrandFather BrownSeriesFather Brown: Series 5 Source: BBC Online