Downton Abbey's Mary and Mad Men's Peggy are teaming up – or at least their respective alter-egos Michelle Dockery and Elizabeth Moss are.

The duo will share the lead in Alex Ross Perry's new psychological thriller Queen of Earth, according to The Hollywood Reporter.  

Perry has previously directed Moss in Listen Up Philip and will now helm this drama, which he also wrote, about two former best friends who escape their busy lives by retreating to a beach house. 

However they quickly discover that time has not been kind to their relationship and the realisation leads to disappointment and suspicion.

As exciting 'n all as the news, Dockery has other things on her mind this weekend as they actress recently received her third Emmy nomination for her role as Lady Mary in the ever popular Downton Abbey and the Best Actress winner will be announced at the ceremony tomorrow (August 25).

The fifth season of the period drama will return to ITV in a few weeks' time.