Jason is trying his best to conduct his business, despite being laid up in the hospital and subject to seizures. But when Robin presents him with a disturbing diagnosis, Jason has to decide on life-risking surgery.

While Jason's brain may or may not be going under the knife, the women in his life begin to wonder how their lives with Jason could have been different. If you've ever wondered about the paths Jason Morgan might have taken -- with the Quartermaines; with Carly; with Elizabeth -- this is the week to watch, as those scenarios play out. What would Monica's like look like if Jason had stayed a Quartermaine? Could Jason and Liz have made it work as starving artists? What if Carly and Jason really did get together? And where do Sam's fantasies of a life with Jason fit in?

With Jason's life on the line, another life in Port Charles finds itself snuffed out entirely. Anthony Zacchara attacks Siobhan in her hospital bed and kills her! Yes, seriously! Leaving Lucky to find her lifeless body. Will Lucky's grief send him over the edge, or will he be able to decipher the message she left for him? Meanwhile, Anthony and Skye continue to scheme against Tracy.

With Jax once again preparing to leave town, look for Carly to confront Sonny about how his out-of-control tactics put their family in danger. It's going to be an epic throwdown, and Michael is going to be squarely in the middle. Which parent will feel the sting of betrayal when Michael definitively takes a side?

All this, plus Maxie pulls out all the emotional stops in order to bring Spinelli's real personality back. And Abby and Johnny have an encounter that could raise a couple eyebrows.

Which storyline are you most looking forward to this week?