When four ruthless, powerful villains – Knox, Flint, The German and Jesse – burst into a bank and take hostages, Angela sends HRG and his shocking, newly empowered partner after them, as the cult US science-fiction series about ordinary people with superhuman abilities continues.

Determined to derail a cataclysmic future, Peter must first find what he lost along the way. Meanwhile, Hiro and Ando track down Daphne and part of the formula to Germany, but fall foul of The Haitian.

Elsewhere, Tracy Strauss leaves Washington DC to search for answers about Niki, and a distraught Claire asks Meredith to teach her how to fight. And, as his romance with Maya intensifies, Suresh finds himself unprepared when his experiment yields some unexpected results.

Wednesday 15 October
9.00-9.45pm BBC TWO