I got stuck in Victors office, on "love snooping around much". I saw the bookcase was sparkling but I wasn't able to click on anything.
Viewing post in Detective Shade: The Turnabout Case jam comments
Your suppose to present clues to him and you need to get the info from Lucas to start suspecting and interrogate victor. At the end of the dialogue sequence, if you haven't fulfilled any of those, an inner monologue would give a hint on what you're suppose to do to proceed. If its the dialogue your softlocked at, try pressing enter. The bookshelf isn't meant to be interacted once you get all the clues.