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On the last night in October 1999 the clocks went back, and Ella and Will's love began.

A teenage Ella sat around a bonfire drinking with her future husband and her oldest friend Cole.

As Ella wandered away from the group, she found herself leaning against a derelict archway before passing out.

The next day, Ella remembered fractured images of a conversation with a woman
in a green coat and red scarf but dismissed it as a drunken dream.

Twenty-three years later, with her marriage to Will in trouble, and Cole spiralling out of
control, Ella opens a gift which turns her life upside down: a green coat and red scarf.

When she looks in the mirror, the woman from the archway is reflected back at her.

As the last Sunday in October arrives, Ella is faced with a choice.

Would she choose a different life, if she could do it again?