Looking forward to season 5 and knowing that the Hansa is headed towards Toussaint and the Countess De Stiel, and knowing that Jaskier’s fear is Geralt leaving him again, if I were writing this (and I’m obviously not) this is where is take Jaskier’s storyline. In doing so combine elements from the book with the plots the show has created and allowing Jaskier not to disappear from the show entirely for awhile.
When they arrive, the Countess would insist they bathe. She would take Jaskier to a separate area of the castle and when he reappears, he’s got a haircut (because why can’t we get rid of the wigs and go back to the season 1 cut while still aging him a bit?) and new clothes that are not for traveling. (Everyone else would continue in their traveling garb but clean.) He would apologize for being absent, promise he’s still with them and invite them to be guests for dinner.
They have a fairly sumptuous dinner, drink, etc. the Countess is a decent host but she seems cold to the group and only has eyes for Jaskier. After dinner they agree to leave in the morning and the Countess separates Jaskier again from the group. Later that night Jaskier find them and says he’s not leaving with them. They argue because something feels off but the drink has them all confused.
In the morning, the Hansa departs, sans Jaskier, and the mood is dour and hungover. That’s when the audience finds out it wasn’t Jaskier that came down the night before, it was a mage or some sort of allusion. They had been drugged at dinner so they wouldn’t sense that it was a fake Jaskier and accept it. The real Jaskier is tied up in the Countess’s chambers (bonus points if they use his own scarf as a gag.) Jaskier manages to escape and tries to run after Geralt. He yells and screams but is eventually captured again.
Here’s where I think you could go 3 ways with this, depending on how long you want to stretch it out:
Geralt hears Jaskier’s screams of “Don’t leave me! And realizes they’ve been duped. They go back and save him and then they all continue on.
2. The Hansa ends up leaving him. The Countess has made a deal with Redania for protection if she promises to deliver Jaskier back to King Radovid. They find him later when Radovid decides to have him hanged for insubordination.
3. The Hansa ends up leaving him. Nilfgard attacks and kills everyone but Jaskier. They take him to Emrys as a bargaining chip for later.
Obviously, season 5 is already filmed, and I’m sure they will go none of these directions. I still think it would be a lot of fun if they did.