The series will be a modern-day take on Conan Doyle's detective - similar to the BBC's Sherlock.
Jonny Lee Miller will play the contemporary Holmes, who solves crime in New York, while Lucy Liu will play a female Watson.
Liu has claimed that the drama - which also stars Aidan Quinn (Prime Suspect) - will turn the Sherlock canon "on its head in a very big way".
Sherlock exec Sue Vertue previously admitted that she finds the similarities between the BBC show and Elementary "extremely worrying".
"We are very proud of our show and like any proud parent, will protect the interest and wellbeing of our offspring," said Vertue.