Mystery at Sea

A class of university students is on an end-of-year trip, celebrating that they only have one year left to finish their respective degrees. The story begins when they board the luxurious cruise ship called "Slonar Class." The protagonist and her friends discover a corpse (one of their university classmates), which they should never have seen, and become entangled in a dangerous web where their lives are at stake.

The protagonist is friends with the secondary characters.

A huge cruise ship with all amenities, capable of hosting a renowned luxury cruise. The journey will last a month, and they will be on the high seas, with no way to leave until the day they return to land.

Escape the clutches of those who committed the crime, discover their identities, the motive for the murder, and survive until the end of the trip when they reach solid ground and can be safe.