Forget the tilte but it had to do with Superman being trapped in Lex's cage. They find him and think he is dead but there is a heartbeat. Lois thinks he is still alive and with Jon & Martha "steal" the body. They try to nurse him back to life at the farm. Does that ring a bell?

I'm not at all sure this is the one you mean, but try "Dark Revelation" by Tank Wilson.

PJ