Conversation so far:
What is Abdication?
Abdication is the act of formally relinquishing monarchical authority.
Was there controversy involving the leaked recorded conversations between Juan Carlos I of Spain's alleged mistress Corinna zu Sayn-Wittgenstein and the former police chief?
She claimed Juan Carlos had obtained secret commissions on commercial contracts in the Gulf States, and had hidden Swiss bank accounts and property purchases under her name.

Question: What else happened?
Self-contained rewrite: What else happened after the payment allegations by Juan Carlos I of Spain's alleged mistress Corinna zu Sayn-Wittgenstein?