kerry rosson telling abc's deborah roberts the moment she found out who her father really was. >> youealize, my god, my father's a psychopath. >> how she provided the missing key. plus her stunning admission. >> i still love my dad today. >> "nightline" will be right back. wait... do we have to thank our moms twice? i don't know... (laughs) breyers. 100% grade a milk and cream, and loaded with delicious cookie pieces. better starts with breyers. rinsing the dishes before they go in the dishwasher? well, cascade platinum has 50% more cleaning power, so you don't have to. its food-seeking enzymes break down food into particles so small they can flow right down the drain. plus, it's powerful enough for the quick-wash cycle. cascade platinum with 50% more cleaning power! ♪ ♪ ♪ ♪ ♪ ♪ hey google, turn up the heat. ♪ ♪ ♪ receive a chargepoint home flex charger or a public charging credit. see your volvo retailer for details. at usaa, we've been called too exclusive. because we were created for officers. but as we've evolved with the military, we've grown to serve all who've honorably served.

the girl on the train," and "into the water," paula hawkins back with "a slow fire burning" and deborah robertsot to fame and fortune with "the girl on the train." well, now, "a slow fire burning" she unleashes a new cast of characters who are simmering with troubles in a clever whodunit tale that's likely to resonate with her loyal viewers. ♪ how could you be so heartless ♪ >> you were seen in the area that night. >> reporter: she's the murder mystery mastermind who penned the story of the box office thriller, "the girl on the train" starring emily blunt. >> did you murder megan? >> no. >> reporter: now, author paula hawkins is at it again. her latest novel, "a slow fire burning" plunging readers into a web of deceit, revenge and murder. to borrow one of your phrases you have been burning them up in the literary world for quite a while now. how do you keep these mesmerizing thrillers going in your head? >> i never seem to have a problem with ideas. i think my problem might be i have too many ideas. the thing i struggle to do is settle on one. >> reporter: her latest mystery revolving around th

deborah plant. right, that was amazing. because at first, we had dr. natalie roberts. so the second year, we have dr. deborah plant. so i'm into the authors who have written books on the survivors of africatown. the survivors of the clotilda. so that book came out in 2017, i believe. great book. 80 years it was being published because they didn't want to publish it because of the cudjoe lewis dialect. she added in, and the book was forwarded. we were excited to have dr. deborah plant. >> when they put him in the barracoon and took him across the passage, he lost his motherland. and after 67 years in alabama, he lost his mother tongue. what i like to remind people when they're reading "barracoon" and say, it's in his dialect. and that was one of the reasons it wasn't public in 1931. the publisher said, you know, we want your story, but we want you to write it in language rather than dialect. that means a lot of things, and we don't have that kind of time. suffice it to say, you know, first of all, they say we want it in language, they're talking about what they call standard english. that's really the language of th