Hairy Biker Si King documents the global outrage that followed the felling of a beloved landmark that had stood in Northumberland for more than a hundred years.

As the two men convicted of criminal damage at Sycamore Gap are sentenced, Si King charts the bizarre theories that began to emerge in the immediate aftermath.

It's a story of conspiracy theories, life changing accusations and very odd disguises.

Music: Lament for Sycamore Gap appears courtesy of Riccardo Pez.

Presenter: Si King.

Hairy Biker Si King investigates who felled the tree at Sycamore Gap, which had stood along Hadrian’s Wall in Northumberland.

The famous tree had come to symbolise the local community and was nicknamed 'Robin Hood Tree', after featuring in the 1991 film Robin Hood: Prince of Thieves starring Kevin Costner.

One morning in September 2023 the tree had been cut down and disbelief gave way to anger, accusations and conspiracy theories as a bizarre true crime story unfolded.

Presenter: Si King.

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A statement from an embattled Chief Executive shocks the nation's media.

As George's investigation comes to an emotional conclusion, new information is revealed and an offer is made to the man at the centre of the storm.

Find out whether the Corby mums or the council is helped when a new witness speaks out.

As experts seek to dismiss the families’ claims as 'fantastical', Des Collins and his team face a curveball that threatens to change everything.

A young George Taylor faces a harrowing decision that will shape his future.

While emotional testimonies make clear the scale of suffering caused by the clean up, Des Collins realises he needs to do even more if he is to secure justice for the families.

A second dead-dropped parcel threatens to expose the toxic waste scandal.

Des Collins embarks upon a nationwide quest to try and prove that the clean up of Corby steelworks is the cause of the cluster of birth defects.

Des Collins arrives in Corby and comes face-to-face with the case that will change his life.

With a group of fearless mothers looking for the truth, Des is determined to find out once and for all whether Corby’s orange dust holds all the answers.

A man with an axe to grind receives a provocative anonymous phone call.

A dusty dossier ignites deep suspicions about safety violations and a chance conversation prompts a meeting with a newshound on the scent of something big.

As toxic waste spreads across Corby, the birth rate of babies with deformities rises.

Simone is born with three fingers on each hand while, 500 miles away a baby George faces his own challenges.

Also, at the site of the clean up, someone starts asking questions.

Exploring connections as orange dust blankets a town and a baby is born with a hand defect.

George Taylor investigates what really happened when his hometown of Corby suddenly turned toxic.