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.
What else happened after the payment allegations by Juan Carlos I of Spain's alleged mistress Corinna zu Sayn-Wittgenstein?
The allegations drew demands for Juan Carlos to be investigated for corruption.

Question: Are there any other interesting aspects about this article?
Self-contained rewrite: Are there any other interesting aspects about the Juan Carlos I of Spain article?