The entire playscript for I’ll be Back before Midnight can be read here:
(Please note this script is for personal use only. Distribution is prohibited.)
Jan sides:
Act 1, Scene 1: p. 7-13 (top of scene to “Jan: I’m not looking forward to it though.”)
Act 2, Scene 1: p. 54-57 (whole of scene)
Laura sides:
Act 1, Scene 2: p. 28-33 (from “Greg: I was just going for a run.” to “Laura: I’ll be back before midnight. Just for you.”
Act 1. Scene 2: p. 37-39 (from “Laura: Just lie down and put your feet up.” to end of scene.