Exclusive: In the immediate aftermath of October 7, Oscar-nominee Dror Moreh and producer Uri Shinar started working on a documentary that would show how everyday Israelis were transformed into “a collage of heroes” in the space of just a few hours.

On the anniversary of that fateful day, Deadline can reveal Even the Walls Cry, a feature almost solely created by volunteers that Fremantle has backed and will be selling at next month’s MIPCOM Cannes.

October 7 was one of the deadliest days of fighting ever in Israel, with around 1,200 people killed after Hamas launched its attack and 250 taken hostage – many of whom have either died in captivity or not yet released. By October 9, Shinar had “asked myself where I should be” and headed to a headquarters for hostages’ families, which had been set up by some friends.

Telling the ordinary stories of those who faced “crimes against humanity,” according to Shinar,...