This week Ian McMillan and his guests write to uncover previously hidden worlds and consider how to use language to hide in plain sight...

Mick Herron is the author of the 'Slough House; series of spy thrillers about a group of discarded and overlooked M15 agents. The first book in the series, Slow Horses has been adapted for TV starring Gary Oldman as Jackson Lamb, and he has just published the eighth instalment, Bad Actors.

Kayo Chingonyi discusses the Black British poetry anthology he has edited; More Fiya, a sequel to the seminal 1998 collection The Fire People, edited by Lemn Sissay. Kayo Chingonyi is a poetry editor at Bloomsbury. He won the Dylan Thomas prize for his debut poetry collection Kumukanda, and his most recent collection A Blood Condition was shortlisted for the Forward Prize for Best Collection, the T.S. Eliot Prize, and the Costa Poetry Award.

Hannah Lowe won the Costa Book Award for her poetry collection 'The Kids'. In her chapbook Old Friends, Hannah walks the streets of Limehouse in search of traces of London's first Chinatown.

Our 'Something Old, Something New commission this week comes from Sarah Howe, whose debut collection 'Loop of Jade' won the TS Eliot prize.

Presenter: Ian McMillan