When solving a mystery, it is very important for the detective to keep an open mind, and to consider all logical (and crazy) possibilities. Any bit of information could be important; dates, times, speed, footprints, trash, notes, messages, a smudge on the mirror, a Koko Kringle bar wrapper in the drawer.... just about anything could be a clue to leading you to your answer. But the detective must be paying attention, and must be very observant, looking at everything. The room and everything in plain obvious sight, to the tiniest hidden detail could very well be important enough not to overlook.
What could be a clue and what could be a false lead? A little contemplation and proper judging of the clue may inspire a lead or a find. Or perhaps the detective may misinterpret the clue to mean something else entirely. A culprit can and will always leave something of value in existence, and it's up to the detective to track that evidence down.
We here at Her Interactive like to hide clues, in both plain sight and hidden in the games, it's just a matter of finding them, identifying them to be clues, and interpreting them correctly. Like this clue hidden in The Captive Curse:
It points to Tomb of the Lost Queen. But that's not all on this resume...there was another clue hinting to the game after that...do you see it?