Last night Holby City viewers saw the return of Zosia March.
We last saw her back in September 2017 when she left to go to America not long after she married the love of her life Ollie Valentine.
Zosia returned to Holby begging Jac to give her a full-time job on Darwin.
Although Jac was unsure as she didn't know what was happening with Frieda, at the end of the episode Jac got a contract for senior registrar for Zosia.
But as Jac signed the contract Zosia dropped a bombshell - she's five months pregnant!
Jac reacted by laughing, obviously thinking she was joking. But as soon as Zosia revealed her bump Jac put her head between her hands.
The last scene... I'm howling at Jac's reaction.
Fans loved Jac's reaction to Zosia's pregnancy.
Ahead of Zosia's departure, her and Ollie's marriage was at breaking point – she wanted to pursue a new opportunity studying in the US, while Oliver wanted to stay behind.
After Zosia's departure, Ollie also left Holby having been left brain-damaged in the shock shooting that killed his colleague Raf di Lucca.
Zosia has been studying at Yale so who could the father of her baby be? WHODUNIT?
In real life, Camilla recently married Call The Midwife's Jack Hawkins in a secret wedding ceremony.
The two actors met back in 2016 when Jack appeared in Holby City as a patient.
Holby City is on Tuesdays on BBC One at 8pm
Who do you think the father of Zosia's baby is? Leave us a comment on our Facebook page @EntertainmentDailyFix and let us know what you think!