He is a tall, muscular and blonde man who lives with his family in their estate. He is the son of Richard Drysdale and Linda Thrombey and is very charesmatic and foreseeing. He shows that by always convincing the characters in the movie to do exactly what he wants and he always has a plan.

He may not seem like that in the most part of the movie. Most of the time he behaves like a child and is very spoiled. He tries to claim his birthright in the testament of his grandfather Harlan Thrombey at any cost. He does not care about the rest of his family as long as he gets what he wants and he even goes as far as murder. He is aware of his disgusting personality and is even proud oft he fact his family despises him. 

Even tho he is very calculating his plan had some flaws and he tends to get cocky after he is sure he won. 

The main Character is Marta who we follow through the movie, when Mr. Thrombey wants to go to bed she is the one who is responsible for his sleeping pills. She also is responsible for him on his 85^th birthday, so when she tries to give him his pills, she accidentally gives him an overdose of Morphine, which the antidote of is nowhere to be found. Harlan knows that Marta will get blamed for his death, so he thinks of a plan, in which Marta leaves the House with the family to make it look like she is not responsible and then sneak back in and act like she’s Harlan to make it look like he died one hour after she left. She then leaves to follow the plan and meanwhile Harlan cuts his throat to make it look like a suicide. 

After Harlan is found dead the Private Detective Benoit Blanc gets hired and Harlan’s last will is found in which he gives all his money and his House to Marta, the Family does not believe that the document is real until a notary approves the Document. The Family then tries to convince Marta to give up on the Money and the House which she does not want to, Marta then runs away to her car because the family puts too much pressure on her. Unfortunately, her car does not start so one of Harlan’s grandson called Ransom gives Marta a ride. Ransom gains Marta’s trust and she tells him what really happened on Harlan’s Birthday. Marta then gets an threatening letter in which is an death report that proves that Marta is responsible for Mr. Thrombeys death. Marta and Ransom then go to destroy Harlan’s death report because that may expose Marta, when they arrive at the building where the death report is in it is already burned down and with it the report. The person who wrote the threatening letter is called Fran, she also dies because of an overdose of Morphine, she dies because she knows the truth about what happened. 

Ransom then tells Marta the truth about how Harlan really died because he thinks Fran survived, Ransom secretly changed the morphine with sleeping pills and stole the vaccine which made Harlan cutting his throwed the only reason why he died, Marta records Ransoms confession and gives it to blanc. Blanc then exposes Ransom at a Family meeting, Ransom knowing he will go to Prison grabs a knife and tries to kill Marta, to Marta’s luck the knife wasn’t real, and the blade would drive in the Handle when trying to stab somebody. At the End Marta looks down at the family Members from her new houses Balcony.