Fair City fans are wondering whether Lucy will confess to Dolores on Sunday on RTÉ One.
In the teaser, it seems that killing drugs boss Ritchie Lennon has become more than Lucy can bear.
"It's all going to come out," she tells Dolores. "And it's better you hear it from me."
"I'm not sure I want to be involved," Dolores replies.
"But you are, Dolores," says Lucy.
She then breaks down, saying: "I did a terrible thing."
Fans can find out what happens next on Sunday on RTÉ One at 8:00pm.
Fair City airs on RTÉ One on Sundays and Tuesdays to Thursdays.
