SOLVED. Adult fiction about a group of people at a university who all share a very similar trait with a secret. [s]

[Thomas]

I did not read the book, but someone told me it was their favorite book recently and I forgot the name. (don't have contact with the person)

I think it was written relatively recently(within the last 30 years), it is in English. The characters are adults in their 20s(-ish). It is fiction

Spoilers (this was how the book was described to me I do not know whether this happens early in the plot):

A dead person is found within the story.

:( Sorry for very vague details.

[Daisy]

What's the trait they share?

[Thomas]

I don't know

[Lobstergirl, au gratin]

The Secret History?

[Thomas]

Oh great, that's exactly it: The Secret Story by Donna Tartt!
Thank you so much!

[Lobstergirl, au gratin]

You're welcome.