On the outs with all professional law enforcement agencies, Sherlock attempted to solve a case to save Joan's career in the season premiere.
The team had to deal with two breachers: Harrison Wells of Earth Two and Doctor Light. Jay had very strong opinions about both.
Quentin's old anti-vigilante task force was causing trouble in Star City, but it was pretty boring trouble.
Team Flash rushed to find a suitable Firestorm partner for an ailing Martin. Iris laid down law with Francine, but found out some surprises.
A twisty art vandalism case kept Alicia and Lucca on their toes while Cary waged a war with Howard.
Laurel and Thea turned to Oliver when they needed help dealing with Damien Darhk, but Diggle would've been happier without Ollie coming back.
Iris got the team back together six months after the singularity, but did they stop the mysterious Atom Smasher from killing Barry?
Alicia is starting over—again—and it's no easier than it was 6 years ago.
Drill made one last move to put the aliens' plan into motion, and we will probably never find out what it all meant.