Hi, everyone

I am looking for I movie I saw in 2017 or 2018. I am pretty sure it is an American movie, and a movie in English language for sure, but unfortunately I cannot remember any actors. The movie itself is in color for sure, and I believe it is from this century ( 2000 onwards) and not older. It is for sure not a TV show! The only scene I remember was when this detective/investigator/researcher had some sort of a case to solve, so he asked for help of his students that he teached, or maybe junior detectives…There was like a group of 10 people in total trying to solve the case. They divided the work, some of them reading,researching various books. And they spent the whole time in that house while researching, as far as I can remember. Sometimes when they found some important clues/news they would kinda gather in the main room, trying to brainstorm about the clue, and go again. I don’t watch indie movies, or like from movie festivals which are less known, so this one is for sure a proper budget movie, and I can bet that the main actor(s) are famous, I just cannot recall him/her/them.

An 80’s or 90’s movie about two guys trying to make a living making low budget videos, weddings and stuff like that.  They get called in to a film set of a music video, which is terrible.  Afterward the band is killed in a freak mishap.  One of the two guys accidently dubs the audio of the bands video (the only recording of the bands unreleased song) over another video.  The other video was also terrible (a funeral) but together it made a rather good music video.   I believe this was billed as a comedy, but had a dark side.