 If you liked
Ghost Hunt
|
 ...then you might like
Kyoto Teramachi Sanjou no Holmes
|
Holmes and Naru are similar characters, both being smarter than average and with a somewhat dark personality (although Holmes is a much friendlier and nicer than Naru).
Ghost Hunt is also a lot more serious and with a deeper plot (and a better series), but the general idea of both shows is not that different.
It's not 100% guaranteed that you will like one if you liked the other, but it may be worth trying.