But as there has been a reconstruction, I thought I'd follow it through to get the time line of events that evening - this is what I got from Crimewatch (times aporox, so give or take 5 mins either way on each?).
This is the iplayer link (will probably be out of date by the time you read this http://www.bbc.co.uk/programmes/p01jqssz)
Praia da Luz on the 3rd May 2007.
Back entrance - Shutters, french windows, curtains - all closed to keep dark (no mention of being locked)
Fron entrance - Door
8:30 McCanns leave kids in apartment 5a, go to tapas bar to meet friends.
8:35 Other guests arrive Matt+Rachel Oldfield (staying next door in 5b), Jane Tanner+Russell O'Brian
9:00 Matt Oldfield goes to checks on his kids.
9:0? 3 more guests arrive
9:0? Gerry McCann goes to see kids
9:05 Gerry McCann sees kids
9:1? Gerry McCann stops to chats to guest on the way back.
9:0? Jane Tanner leaves to check her kids
9:15 Jane Tanner passes McCann apartment checking on her kids
9:1? Gerry McCann Back
9:20 Starter - every one present
9:30 Kate McCann stands to check, but Russell O'Brien and Matt Oldfield Go
9:3? Matt Oldfield returns, Russell O'Brien stays with sick daughter.
9:40 Jane Tanner goes to take over from Russell O'Brian
10:00 Kate McCann finds daughter missing, French windows open
So if it was a planned abduction, as the police currently suggest, then abductor(s) - knowing the McCanns schedule - would have to be looking at 8:35-8:55, 9:05-9:25 or 9:35-9:55 (a few minutes after a parent is expected to have left/half hourly check, till a few mins before they return - giving a maximum of 20 mins to get in, do the job and get out). Gerry sees the kids at 9:05 so not the first slot, and a delayed start on the second, how ever Gerry is still not clear at 9:15 when he is chatting to another guest between the apartment/bar and Jane passes to check on her kids, giving almost no time until the the next slot... So 9:35 it has to be. This time Matt goes in place of Kate (no explanation of how he gets into the apartment to check on their kids) - he checks his kids (next door as well) so now looking at going in about 9:40 at which time Jane must be going past the apartment to take over from Russell, who then (presumably) pass the apartment going back to the tapas bar. So it is about 9:50 and your slot is to 9:55... Would an abductor go for it? If you can silently kidnap a kid from an apartment in five minutes, who needs a plan? Kids would be going missing all the time - even while parents are in the shower!