With the Achtung Baby reissue campaign about to get underway, marking that album's 20th anniversary, BBC One are set to show From The Sky Down as part of their Imagine series.

Dealing with the band's Berlin days and their attempt at "chopping down the Joshua Tree", directed by Oscar winner Davis Guggenheim, premiered at the Toronto Film Festival on September 8 – here's a trailer for From The Sky Down to whet the appetite of every U2 fan.

You can catch the whole thing on BBC One, at 22:45, Sunday October 9. The documentary will be followed by a rerun of U2's Glastonbury 2011 show.