TV Guide for Now Tuesday 25 in Sky Documentaries

A look at Observer journalist Chloe Hadjimatheou's investigation into allegations of factual inaccuracies in Raynor Winn's book The Salt Path.

A documentary investigation into whether remorseful Randy Herman Jr really did commit a brutal murder in his sleep, or whether it was a convenient cover story.

Oliver Stone's documentary examining the assassination of US president John F Kennedy, using James DiEugenio's 1992 book Destiny Betrayed: JFK, Cuba and the Garrison Case, and recently declassified US government files to shine a light on what happened in Dallas on November 22, 1963. Narrated by Whoopi Goldberg and Donald Sutherland.

Eastern Ukrainian refugees find themselves unwelcome in the village of Dytyatky near Chernobyl, with locals sceptical about their leader's madcap business ventures.

In July 1985, two bombs exploded in the Port of Auckland, New Zealand, sinking a ship belonging to environmental pressure group Greenpeace. Investigators suspected terrorists, but quickly uncovered clues leading directly to French secret service agents. This documentary features interviews with key figures - including one of the bomb-makers - to reveal a fascinating story of cult members, corrupt politicians, madness and mishap.