Cast your Ensemble 'Murder Mystery on A Cruise Ship' Movie

Holy Ship! (religious cruise)
Choppy Waters (axe murderer on board)
Phenomena II: Monkey Sea, Monkey Kill (Jennifer Connelly must clear Inga the chimp and find the real killer)


Cast:

Michael Caine
Jennifer Connelly
Charles Dance
Anthony Hopkins
Damien Lewis
Charlotte Rampling
Emma Thompson
Emma Watson

Male:

Chales Dance
George Clooney
Anthony Hopkins
David Schwimmer

Female:

Scarlett Johansson
Jennifer Lawrence
Amanda Seyfried
Mila Kunis

The Captain - Charles Dance.

Ship's Engineer - Idris Elba.

Cook - Chi McBride.

Doctor - Tom Hiddleston. 

Lounge Singer - Scarlett Johansson. 

Stewardess - Amber Heard. 

Bartender - Bradley Cooper.

Stowaway - Millie Bobby Brown.

Movie Title - Oh Ship!

Plot Summary:

The Captain has two daughters aboard his luxury liner – one’s a Lounge Singer, the other a Stewardess. They don’t really get along. After setting sail, a young Stowaway is discovered aboard. The Captain and Lounge Singer wants he gone, but the Stewardess manages to convince her father to let the Stowaway stay (which the Lounge Singer isn't happy about), and the Cook says the girl can help him in the kitchen. The Stowaway makes friends with the Stewardess, Cook and Bartender. While the Stewardess and Bartender flirt, so do the Doctor and Lounge Singer (with him remarking on her Heterochromia AKA different coloured eyes – one green, one blue).

The Lounge Singer winds up being the first one murdered, as she’s electrocuted by her mic whilst performing. Everyone is shocked. The Doctor determines it was a freak accident, but has his suspicions (and didn’t want to voice them when he suspected the Killer was in the room). When it’s dinner time, the Stowaway (who’s been put to work in the kitchen) serves a couple who get the fright of their life when they find two eyeballs in their soup (you guessed it, one’s green and one’s blue). This throws suspicion on the Stowaway (as the Lounge Singer wasn't very nice to her), but the Cook leaps to her defense...which just gets him into trouble and the Captain thinking he did it (as the Lounge Singer wasn't very nice to him either), which results in the Cook being locked up.

The Doctor (stupidly) goes to confront the Killer and ends up the second victim as a result (death by meat cleaver). While the Killer is disposing of the Doctor in the boiler room, the Ship’s Engineer stumbles upon the scene and is consequently the third victim. The Stowaway takes it upon herself to become the amateur sleuth onboard, but is knocked over the side by the unseen Killer. Luckily, the Cook has managed to escape from where he was being held and saves her. Meanwhile, the Stewardess flirts some more with the Bartender until he notices a speck of blood on her clothes. Naturally, he becomes the fourth victim. The Stewardess outs herself as the Killer to her father, with her motivation being that she never received the love from him that her sister did. He’s the fifth victim.

The Stowaway and Cook confront the Stewardess/Killer, who manages to knock the Cook out and almost throw the Stowaway overboard a second time (having failed earlier). As villains do, the Stewardess/Killer has to monologue about how she lived in her sister’s shadow (The Doctor, for example, only had eyes for her) and that she took great pleasure in offing the two of them. The eyeball soup was to throw suspicion onto the Cook, while the Ship’s Engineer just happened to be in the wrong place at the wrong time, as he caught her in the act of disposing of the Doctor. She claims she did care about the Bartender, but he had to go when he too caught onto her. Again she moans about her father and the Stowaway points out how crap/clichéd her motivation is, as well as her being one of the ‘sloppiest’ killers ever. Enough time has passed for the Cook to regain consciousness, he knocks the Stewardess/Killer overboard (death by boat propeller), thereby saving the Stowaway again. The pair collapse to the deck, taking a moment to recover from their ordeal, before the Stowaway breathlessly asks the Cook what the ship's name is and he answers, equally out of breath, "Ship Happens".

The End.

Apologies, 博: Dr.BLΔD€ :锯 - I just remembered that you said we should have four male and four female characters, but for the purposes of my plot (which isn't great, I admit), I required only three female characters, but five male characters. I hope you don't mind. 

"Evil On Dark Waters"

They are all victims... but the killer (Tom Hiddleston).


Charlotte Rampling
Meryl Streep
Jennifer Connelly
Amber Heard
Anthony Hopkins
Michael Caine
Bradley Cooper
Tom Hiddleston

Male
Michael Caine
Anthony Hopkins
Tom Hiddleston
Idris Elba

Female
Emma Thompson
Emma Watson
Amanda Seyfried
Cobie Smulders