Felicity and Ray from Arrow swung by Central City to seek some help just as a bee-themed baddie set her sights on Mercury Labs.
Alicia fought the cries for a recall only to be undermined from within. Meanwhile, the firm scrambled to save itself from Kalinda's forged evidence.
Alicia faced the press on the matter of the leaked emails, while Diane went to court over gay marriage. Oh, and Andrew Wiley is back.
Ra's has stepped up his game to "sweeten" his offer to Oliver by turning the entire city against the Arrow.
Barry and Joe turned to the original Trickster for assistance when a copycat arrived to terrorize Central City.
Alicia navigated the spoils of victory while the firm dealt with being hacked.
A new Weather Wizard arrived in Central City while Cisco arrived at the conclusion that Harrison may have something to do with Nora's murder.
Colin Sweeney returned with a lawsuit against a TV film about his life, and Alicia competed against Prady for a major campaign donation.
Oliver now has a very big choice to make.
Thea and Oliver traveled to Lian Yu, where they did battle with a newly released Slade.
Vertigo returned with a new a strain of his patented fear drug as Oliver and Laurel clashed over Laurel donning Sara's costume.
Flash and the team set out on the hunt for Ronnie as General Eiling returned to Central City. Meanwhile, Joe asked Cisco to help investigate Nora's murder.