I just accidentally came across tonight's BIG SPOILER for Angel... I think.

[butterfly]

Mentions of a possible spoiler, and then hopefully there will be a definite answer in the comments.

Is it really Lindsey? He comes back tonight?

If that's true, I'm going to die of giddy glee right here and now.

Lindsey! My love hasn't waned! I adore you!

Seriously, though, I adore Christian Kane so much. I bought KANE and haven't regretted it for a second.

Is Lindsey in tonight's episode?

I don't want to get my hopes up, you know?

A million thanks to minim_calibre and anonymous_sibyl for answering my question.