Heather Patterson has lived a life of converging and diverging lines.

Her husband had been incompatibly perpendicular, merely crossing her life temporarily on his way to 'better things.'

Her teenage son is gradually drifting away from her as he heads for adulthood.

And her father has completed the arc of sending her off into the world and then welcoming her back to his home in need of care.

Is it too much to expect that someone with matching tastes could converge with Heather's own continually straight line?

Can she find a parallel love?