Looks like Bring Me The Horizon are teasing something as a cryptic billboard appeared in London with the words “Do you wanna start a cult with me?”.
Along with the text is a phone number. When called, a woman answers saying “They’re making me do this. I didn’t know what I was getting myself into” followed by a clip of music.
Bring Me The Horizon things are happening 😁 pic.twitter.com/xuLT7C5Uk0
— Connor (@ConnorM_Photo) August 10, 2018
There’s also this website joinmantra.org that leads to more clues and mentions the date August 21, 2018.