OOD Readers Paradise - Reading Challenge Day 74

Good morning dear bookworms. We express our utmost gratitude and would enjoy reading more of your comments. We welcome you to round 2 of ''Solve this puzzle''. So dear bookworms, bring your A+ Game on!!!!

PART 1:- Who is it??

1- He is a prolific author who has written detective stories, thrillers, science fiction, etc. While being a published author, he continued moving up the ranks of the advertising world until 1996, when he decided to leave his life as an executive to focus on writing full time

2-  She was an English detective novelist and playwright. She wrote 75 novels, including 66 detective novels and 14 short story collections. She is perhaps the world's most famous mystery writer and is one of the best-selling novelists of all time

PART 2:- Unscramble

1- eht olcro uplepr 
2- igsnht alfl rpaat
3- alhmte                                                                                                                                                                                                                                                                                

Good luck!!
Your beloved booklovers
Aishwaryaa and Divyalakshmi