*This is a review for the entire series*
The first couple seasons of Lucifer were amazing. The show had a gripping formula of (good) procedural storytelling intermixed with an entertaining heaven/hell mythology. Tom Ellis is a massive reason for the success of the show. His portrayal of Lucifer is spot on. The charisma just jumps right off the screen and he also displayed the ability to create emotional moments that resonate with the viewer. The character feels real and Tom's ability to carry a complicated show on his shoulders with ease can't be understated.
You can definitely see why Netflix picked up the show when it was cancelled because the show didn't deserve to be cancelled at all.
While the first couple seasons of the show were tight, engaging and well written, the latter half of the show's run suffered from poor writing. Of course this is just my opinion, but I think the writers struggled with Lucifer and Chloe's relationship, the side characters being removed from the central action and the balance between the procedural and mythology aspects of the show.
The first couple of seasons would have gotten an 8 from me but since I have to judge the entire show on a whole, my rating is being reduced to a 6.