Was thinking it was Flash Forward but now don’t think it was.
There was some sort of big event, people died or had near death experience or disappeared.
Then people were left trying to work out what happened.
One major thing I remember is lots of dead birds/crows falling from the sky. I think some FBI agents were involved in trying to find out what caused the incident.
One of the main characters his wife left him and went to live in a house and dressed herself in white and wouldn’t come home. Some dogs went crazy and attacked people.
I may be getting some stuff mixed up with Flash Forward but I do seem to remember there been two similar shows on at the same time approx.
It was American.
Not that French show, The Disappeared or the American version of it.