Klaudius Rex
Explorer
Medusa's are not very nice. they hold a lot of scorn, but to your credit, the book allows for some parlay...maybe this is an option for the new players...
they were all turned to stone by the medusa. essentially, its still a total party kill, since there is no one who can possibly bring them back...
The next party could be a group of medusa hunters with absolutely no interest in the other story line at all. Just a roving gang who scour the country hunting down medusae and saving bestoned adventurers.
When a party TPKs in my game, whatever the end goal of the bad guys is happens. If the bad guys were Zhentil Keep trying to take over all of the Heartlands, then the next group comes into play with the Heartlands being under the domination of Zhentil Keep. Then the party can either pursue a different goal , or try and undo the results of the last campaign. By not starting the prior campaign over at some point, it gives both a sense of consequence to the PCs actions, and a sense of importance to the PCs themselves.
so do you just end the game right there and start anew?
what would you recommend happen when the group is playing a prewritten campaign module like Tomb of Annhilation? the same thing? just close the book, and say, "sorry, you lost." No more raise dead/resurrection spells from this point on in all my future Forgotten Realms games?