“ Draw the party together as debtors to the local lord, king, head of the thieves guild, or mercenary clan, who is forcing them to work together to pay off their debts.”
“ A nation state has a hardline tradition of transparency in government. So much so that any and all information held by their military and intelligence services is immediately declassified and published when the said information is no longer relevent to current and ongoing activities. Even if such information might be diplomatically toxic.”
“ The PCs are accosted in a major city containing at least one famous fortuneteller / prophet of the future. They are informed that their as-yet-unborn child will (insert terrible evil), and that, although they are very sorry, the PC must be executed to keep this from happening.”