Gaslit (TV series) on Amazonprime , Political Thriller
 

Julia Roberts & Sean Penn.


[The story will center on Martha Mitchell,
a celebrity Arkansan socialite and wife to
Nixon’s loyal Attorney General, John N. Mitchell.
Despite her party affiliation,
she is the first person to publicly sound
the alarm on Nixon's involvement in Watergate,
causing both the presidency and
her personal life to unravel.
As attorney general, Mitchell is forced to
choose between Martha and the president.]


https://en.wikipedia.org/wiki/Gaslit_(TV_series)

Looks good.
Clips were on GMBHD itv.