Fred was last seen leaving Earth at the start of the season earlier this summer, and his re-appearance on the show won't be a terrestrial one.
"Viewers get a look into what Fred's been up to since he left Earth," according to EW. "Now we find him back in Heaven in his old position of processing the new arrivals and naive Fred finds himself in a predicament similar to the one that brought him to Earth in the first place."
The season finale airs Sunday, Sept. 9 at 9/8c.
In other Drop Dead Diva news, Josh Stamberg, who plays Parker on the show, has booked a guest role on the upcoming eighth season of Criminal Minds, TV Line reports. Stamberg will play the father of a family that has been abducted in the third episode of the season, which kicks off on Wednesday, Sept. 6 at 9/8c.