Dan Biddle, a survivor of the 7/7 bombings in London, shares his harrowing experience 20 years later.
He recalls standing next to the calm attacker when the bomb exploded, killing everyone around him.
Biddle survived despite severe injuries and attributes his survival to a fellow victim, Adrian.
He speaks of his ongoing struggles with PTSD and his efforts to inspire hope through his new book.
A poignant reminder of resilience amid unimaginable trauma.