I'm currently writing a plot synopsis for my book at the moment (urban fantasy/post apocalyptic), and have got my characters into a situation where I need to try and get them out preferably all in one piece, so any advice would help with the following: Basically, my characters, all teens, 3 male, 3 female, are stuck in a Mansion overnight in order to escape from the limitless enemy that they face outside that is currently unaware of their presence. The problem is the Mansion is not theirs, and they don't know anything about it, until one male finds out that there is a secret tunnel underneath the Mansion. They split into two groups and the guy leads another guy and a girl into the tunnel whilst three of them stay behind. The trio that are investigating the tunnel below find that it leads into an empty secret meeting place for the organization that was before the apocalypse trying to kill them, but trigger a trap that shuts the room on itself, and water suddenly starts filling up the room from which there is currently no immediately noticeable way out from. They have a mobile phone, kept active by magic which connects them with the three up top. One of the three in the mansion is essentially a wizard (the others know this), but his powers have been drained from an earlier incident and lies unconscious. Out of the three down below, one of them can use magic, but it is very limited, and cannot get the trio out nor blast a hole in the wall. And I need an effective, realistic way for the three characters who are currently trapped to escape from. I was thinking of having another way out through an underwater stream which would lead down to a river, but then they would have to deal with the monsters outside if they wanted to get back to the Mansion. But The water is rising fast, and it won't be long before they start drowning. So any help would be appreciated, and if this is in the wrong forum, give me a shout and I'll change it ASAP. Thanks in advance. If anybody wants any more details I can provide them.