NEW YORK (AP) — It was the kind of tawdry tale Donald Trump might’ve relished before politics: a porn actress claiming they’d had sex.

But on the eve of the 2016 presidential election, Trump feared the story — which he says is false — would cost him votes. So, prosecutors say, he arranged to pay Stormy Daniels to keep quiet.

Now, after years of fits and starts before an indictment last year, Trump is set to stand trial Monday in New York on state charges related to the very sex scandal that he and his aides strove to hide.

Barring a last-minute delay, it will be the first of Trump’s four criminal cases to go to trial. It will be an unprecedented event in U.S. history — the first criminal trial of a former president.

It wasn’t always clear the hush money allegations would even lead to charges — let alone be the first to reach trial. It is arguably the least perilous of Trump’s indictments, with others involving government secrets and threats to democracy.