[NotARylanFan]

I'm half expecting them to put Marc back in.

In the lead-up to last year, they said over and over that the time theme would allow housemates of the past, present and future to appear. We had the housemates of past (Timewarp HMs) and present (Simon) - but we never had future.

The fact Harry-Amelia and Marc entered the house through "a timebomb machine" to me suggests that one of these two (or both) are "housemates of the future". If they decide like having a weak excuse to bring someone back at any random point.