The third episode of The Last of US - HBO's new zombie apocalypse TV series based on a video game - is being hailed as one of the best TV episodes of all time. Airing in the UK on Sky Atlantic and streaming on Now, it told the beautiful love story of two survivors - Nick Offerman as Bill and Murray Bartlett as Frank.
The series, based on the multi-award-winning PlayStation videogame, is set in a world ravaged by a fungal cordyceps parasite that turns the infected into violent monsters. It features Pedro Pascal as Joel who finds himself responsible for the care of 14-year-old Ellie, played by Bella Ramsay.
However, episode three focused on two other minor characters - and told their heartbreaking story in full. Viewers were introduced to 'prepper' Bill in 2003, just a few days after the outbreak. Four years later, he meets Frank - and then the episode shows them fall in love and live out their lives, for the next two decades, in post-apocalyptic Massachusetts.