Next Monday on Gossip Girl, Charlie is invited to attend a Constance Billard alumni fundraiser, leading to who knows what from the Upper East Side's new crazy girl.

Meanwhile, on the road to happily ever after, Blair finds herself torn between the men in her life. Does that mean Chuck and/or Dan make one last bid for her love?

If it's Chuck, he's got a number of things working against him. Namely his actions in last night's episode, but also the return of Jack Bass (guest star Desmond Harrington).

Jack teams up with Russell and a new chain of events could end up destroying Chuck and those closest to him. Any theories on what their sinister plot entails?

Here are two promos for next Monday's "Shattered Bass" ...

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