Here's a selection of recent tweets, beginning with some thoughts from Sam:
"Here we go then. Press night on a new continent. Feels good that some of my second Sheffield season is still going, five years on. #anumber." (@exitthelemming)
"@TheFugard tonight 4 A Number - wonderful play w great acting. See it if you can..." (@UKinCapeTown)
"A Number production last night was moving and also leaves a lot of 'What If' thoughts to ponder..." (@NickiLinde)
"Loved it, great night out... @exitthelemming congrats on a brilliant show..." (@lucymayhinde 1|2)
"@exitthelemming outstanding work tonight..." (@untheatre)
The readers for the Book at Bedtime All That I Am are Sam, Hattie Morahan and Sara Kestelman. It starts on BBC Radio 4 on 24 October (BBC Press Office).