Thanks, Squidge, for your insightful comments. Interesting that the working title would catch your eye without even knowing about WG Lyttle. I agree the other bit wasn’t really a strapline – more part of the blurb, as you say.
Bella, I love the idea of ‘Hold the Front Page.’ Unfortunately it would be anachronistic; back then the front page was always nothing but adverts 🙁
The Improbably Life… would fit well – but maybe not strong enough?
Thanks to you both for giving me food for thought.