What are the classic murder mystery series components?

1. There should be a death in first part (ticked) 2. There should be investigators one trying to close the case ( in this case police) and one seeing something fishy (in this case the trio of Mabel,putnut and brazzos) 3. There should be suspects changing in each episodes (ticked) 4. In most of the cases the investigators have their own mental/family issues , examples are Broadchurch, The fall, Happy Valley and so many (Here also three main characters have that) So what makes only murders in the building interesting ? The answer is prop used here is unique as it doesn't depend upon Police or CIA or some crime branch its the people who are making the podcasts and the second is its comic touch because there is steve martin,martin short off course.

Lovely watch, I am already glued for season 1.