"She says she doesn't know me and she lied and said she was never close to my dad… if pointing out that what she says are all lies breaks your heart, too bad because what I'm saying is the truth."
"We've seen how that ends," the actor added.
"It is in the best interests of the baby for my dad to be included."
Families of celebrities can find themselves caught in the "reflected glory" of fame.
Frederick Markle is reportedly a self-proclaimed Catholic bishop with no parishioners.
"Maybe it would be better for you guys if I was dead... then you could pretend to be sad," Thomas Markle told Prince Harry.
"I think no one in media would refuse a paycheck for talking about the royal[s] and, as a family, we're not subject to royal protocol."
"I would do it for you for 1,500 my minimum is much higher," Samantha Markle said.
"Act like a humanitarian act like a woman! If our father dies I'm holding you responsible, Meg!" Samantha Markle said.
"She has no excuse not to meet me."
Thomas Markle said his royal son-in-law may have been a Trump supporter but added: "I would hope not now."