"I'm sorry for what I said, Ruth, on the rooftop. Forgive me."

And with that Harry was dragged somewhat more forcibly than necessary through the pod doors.

The team stood.

The whirlwind of Internal Affairs had blown across the grid and left them in its aftermath, in a stillness, a false stillness, an uncomfortable stillness.

They wondered what Harry had said to Ruth on the roof.

So did Ruth.

He had said nothing to her in recent days. She had not had a chance to speak to him since Lucas had died. And yet the look in his eye as they dragged him away. The look as he mentioned the rooftop. She knew he was trying to tell her something.

She waited patiently, she waited and she watched and eventually she made her move.

The wind was strong this evening and the light was falling rapidly. She stood by the rail, trying to determine if anyone was watching, she felt uneasy, she felt observed.

She leant, gazing out at the lights of the city that were becoming brighter and brighter as the daylight deserted the sky.

Her hand gripped the rail. She sighed and gently slid her fingers along it, unseen by anyone who might be watching.

The smooth coldness of the metal was interrupted as her fingers splayed over tape and plastic. She yawned, her hand rising to her mouth and then she moved away.

The watchers too turned away, disinterested.

Ruth held the tiny package between her fingers and whilst seemingly adjusting her blouse collar, she secreted it into her bra .

And then she left the grid and went home.

She sat.

A large glass of wine untouched beside her.

Between finger and thumb she held a USB stick. Her laptop sat waiting for it. She contemplated what she might find on it. She wondered about the possible message that he might have left for her.

She slid it into place and waited impatiently for it to appear on her desktop.

And then she opened the drive and read what Harry had wanted her to know.