We've got a few newbies and even experienced Investigators can lose sight of the basics: Use your contacts. Not just contacts, but witnesses and subject matter experts (docents, doctorates and graduate students). Library Use, it's a skill for a reason. Spot Hidden, use it. Once you've spotted something determine if it's important by using Occult rolls or the above (contacts, Library Use etc). Search rooms, containers and locations. Look for motive. Look for suspects. Try to understand what is happening and why. As a GM, I don't lead players by the nose and while this module isn't open-ended it is more of a sand-box than a straight-forward module.