It really does feel like there is a lot of filler, well not even filler just rubbish, episodes this season. I didn't actually mind some of the stand alone episodes, like the Las Vegas one gave change for Ella's character to develop outside of the normal CSI role. The whole Lucifer Chloe will they won't they was sometimes too much but oftentimes felt like a parody when taken with Lucifer and Linda's conversations which kept an old trope fun for me. However the whole Cain / Chloe / Lucifer relationship drama is just a rubbish love triangle.
There is only a few episodes left and I'm thinking (maybe more hoping) that Lucifer tries to protect Chloe from Cain by telling her who Cain really is. Obviously, Cain is no longer immortal so he can't kill him to demonstrate it and it ends up with Lucifer getting so angry at Cain that he gets his devil face back which reveals it to Chloe too.