BEFORE
A man running along a remote clifftop path on an icy-cold February morning.
A woman standing on the cliff's edge.
A red scarf on the ground between them.
AFTER
The man is alone - paralysed by fear.
The woman is on the beach below - dead.
The red scarf is now perfectly - and impossibly - arranged around the woman's broken neck.
A handful of seconds. Two lives colliding.
WHAT HAPPENED?