It's the middle of the night when his dad rolls up after nearly a year of disappearing with a heavily pregnant blonde.
If he had his way he wouldn't have let them in the house but he was outvoted. Aunt Polly tells him they are only staying until that baby is born.
Tommy almost finds it amusing that his dad has another child on the way when he can't be bothered with him, Arthur, John or Ada.
He doesn't voice it out loud, Aunt Polly told him not to start anything and he won't because he promised her that he wouldn't.
He just spends as little time at home as possible.
She's pretty the blonde, he doesn't bother learning her name because she's nothing to him, just someone either stupid or naive enough to fall for his dad's bullshit.
He pities her because he knows his dad will ruin her life because that's what he does to people.
He drove his mother into an early grave, if he hadn't been sleeping with that woman's daughter, Aunt Polly wouldn't have Michael and Anna taken from her.
Aunt Polly doesn't know that piece of the story and Tommy never intends to tell her because losing them nearly destroyed her and he doesn't want her to know that ultimately it was her brother's fault.
Aunt Polly is there when the baby is born and so is Ada. A boy, the blonde names him Finn.
Two weeks later, after Finn is born his dad and the blonde are gone. They just left Finn like he was nothing and he expects it from his dad but not Finn's mum.
Aunt Polly says it's for the best and Tommy doesn't know whether he agrees or not, but nods his head in agreement because for the first time in a long time she's happy.
Having Finn there makes her happy so he doesn't complain, that's its another mouth to feed or another person to protect.
Tommy just silently slips into the role of being a father figure to Finn because Arthur's to unpredictable and quick tempered, and it's not fair to force the role onto John.