-Kasmi (The Cursed Train)

It all starts with Mimics appearing on regular trains.
A Mimic is a creature that can transform into a human and hide behind them, but the Mimic can make mistakes. Its role on the train is that it can kill while hiding behind the person it entered. It must know their name, age, ticket, compartment, and practically everything else, so as not to be discovered by others.

So, here's another trip, people boarded the train, settled into their compartments, everyone was given rules, they said
Rules: 1. No alcohol or energy drinks on the train 2. No weapons 3. No gambling
It's all simple, isn't it? But still, some people brought in alcohol, energy drinks, and gambling.

It was your shift, you walked around the compartment with your partner and checked tickets, suitcases, and the traveler's journal while the Mystics were away
Entering compartment 13, you noticed a small group of people, a young guy (Kasmi), a little girl with her mother (Alice and her mother Emma), a drunk man (Bob) and an old man (Thomas)

Drunk Bob and Grandpa Thomas were playing cards, which is prohibited by law, there's already a ban. The guy was lying on the top bunk, looking at something on his phone. A little girl and her mother were also sitting on the top bunk, and apparently were unhappy that some drunk had taken their place.

I don't know what to write..