An assassin took Charlie Kirk's life, leaving Erica Kirk a widow and the leader of one of the most powerful conservative groups in the country.

Can she help unite a fractured America?

A town hall with Erica Kirk, Saturday on CBS.

Music.

Mm-hmm. Yeah. When you have someone who's missing in your life, there is no answer.

They meet in a brownstone in Brooklyn, New York.

I consider us all part of this lonely hearts club, these sad souls.

But no one wants to be here.

They didn't pay attention to her. She can count.

Everyone here is related to a missing person.

But we know that she did not, could not, and would not disappear voluntarily.

And every story they tell is heartbreaking.

I still feel that maybe somebody's holding her, and that maybe one day they'll let her go or she'll escape.

But perhaps no story is more mysterious and frightening than this woman's.

I love Christine. I would choose to be with Christine over anybody.

Her name is Kathy Kukka, the organizer of the group. Her sister Christine disappeared.

And by now, Kathy has accepted the sad fact that her missing sister was probably murdered.

What she won't accept, she says, is somebody getting away with that murder.

And Kathy says she knows exactly who it is.

Like this is so horrible that, you know, I know people try to understand, but it's so horrible

that people can't understand.

And I think the hardest part is that someone could take someone away from me that meant so much

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