Mount Type: Not stated Brooker noted in 2018 that Channel 4 agreed on a 3rd number of four episodes, but asked for detailed synopses of the episodes ahead of time. Brooker came up with an episode "Angel in the Morning", which might later become a story in "White Xmas". https://socialbuzzfeed.com/story3975552/detailed-notes-on-smoke-mirrors-sunglasses