Following my recent questioning of going into production on a script you haven't finished the ending for, I came across this quote from TV A-lister Stephen Gallagher:
"It's good practice to know your ending in advance. This means knowing where you're going, what point you ultimately plan to make, before you start. Every story has a point; not necessarily a message, but a point. How to define the point? Put simplistically, somebody learns something they didn't expect to learn. "
from his article "The Spine".
Stephen has also generously posted the pitch document to The Eleventh Hour , the now cancelled ITV drama series on his website
3 hours ago