I've developed affection for the main trio and the fusion of ghost story and historical drama really worked for me. Chicago Typewriter sometimes is laugh out loud funny and some moments are terribly tragic; there are scenes that make your heart flutter and scenes that give you the feels; the settings and costumes are on point; there are unexpected twists and turns, a lot of character development and, for the faint of heart, there are two paralel endings that leave you satisfied with the ride.
By the last third, things slow down a bit and get tropey, but the slump is overcome and the show reaches a very satisfactory conclusion, revealing that the writing is solid and that there is cohesion for the show as a whole.
Do yourself a favour and don't look up for recaps or spoilers. Just watch this show!