![](https://image.tmdb.org/t/p/original/rAsQCY3xjURS0WAJqB2CwW7nFm2.jpg)
![](https://image.tmdb.org/t/p/w342/gKG5QGz5Ngf8fgWpBsWtlg5L2SF.jpg)
The Scientist
When a superhumanly strong thief robs a Queen Consolidated warehouse, Central City police scientist Barry Allen comes to Starling City to investigate the case. However, despite his close working relationship with Felicity, Oliver suspects that there's more to the young scientist than meets the eye. Meanwhile, Sin asks Roy to help investigate the disappearance of a friend. In the past, Oliver, Shado, and Sara try to get Slade to the submarine so they can use the serum to save his life.
![](https://image.tmdb.org/t/p/w300/dKxkwAJfGuznW8Hu0mhaDJtna0n.jpg)
![](https://image.tmdb.org/t/p/w300/dXTyVDTIgeByvUOUEiHjbi8xX9A.jpg)
![](https://image.tmdb.org/t/p/w300/scivLGg7zdqmdw5eDW3rvrEavr6.jpg)
![](https://image.tmdb.org/t/p/w300/2yfXq8JFNz6719MjCA5GgQne04b.jpg)
Other episodes for this season
![City of Heroes](https://image.tmdb.org/t/p/w300/zqnAl9XvKYgiGpdyxDntJR9Lzn2.jpg)
![Identity](https://image.tmdb.org/t/p/w300/xGgGU5xeahs0KK5qImAj9B43ZHI.jpg)
![Broken Dolls](https://image.tmdb.org/t/p/w300/aFlxt9oeW4oJu6zSKf65rWKZl3.jpg)
![Crucible](https://image.tmdb.org/t/p/w300/mjtvm4urpEjZXEn9VIkTFuoIy2.jpg)
![League of Assassins](https://image.tmdb.org/t/p/w300/qkwlm99g3YPQE8o0BIDBn4ADVdE.jpg)
![Keep Your Enemies Closer](https://image.tmdb.org/t/p/w300/fl2FLNQRJyh2hnSOmcjUl8TWKzF.jpg)
![State v. Queen](https://image.tmdb.org/t/p/w300/vAVVUh5o4j71ymC0Ldhdg9VvJL1.jpg)
![The Scientist](https://image.tmdb.org/t/p/w300/rAsQCY3xjURS0WAJqB2CwW7nFm2.jpg)
![Three Ghosts](https://image.tmdb.org/t/p/w300/ndpVHvr8lHrQWuCOD0IGQrxPDPz.jpg)
![Blast Radius](https://image.tmdb.org/t/p/w300/eHt9NocxYKVYkfVJ5Cb8jz5EW9A.jpg)
![Blind Spot](https://image.tmdb.org/t/p/w300/5ukoueXIv56dMniebT5lFSMmpKH.jpg)
![Tremors](https://image.tmdb.org/t/p/w300/2XVnWCjNNndVhXvJt5vCGiWeYMD.jpg)
![Heir to the Demon](https://image.tmdb.org/t/p/w300/rRefpxqXfmFUw7cMQ3PEDYcDnGw.jpg)
![Time of Death](https://image.tmdb.org/t/p/w300/tZ5a078bJYwcb8Ozv5ROCMnfo9u.jpg)
![The Promise](https://image.tmdb.org/t/p/w300/670eWrPnICTJ0lbW22vf8P3Wlt7.jpg)
![Suicide Squad](https://image.tmdb.org/t/p/w300/rSQvxVSfyAjueAq84ubK9uoqv4x.jpg)
![Birds of Prey](https://image.tmdb.org/t/p/w300/5CUNB89DfsECd8gCsojTZbtfS8F.jpg)
![Deathstroke](https://image.tmdb.org/t/p/w300/qgQdgzl4Q3Zf6vIgfcszFpGdfpA.jpg)
![The Man Under the Hood](https://image.tmdb.org/t/p/w300/fTD11EYeIy7rqfqXI464Q0eb7cE.jpg)
![Seeing Red](https://image.tmdb.org/t/p/w300/lMIurwiY5GUlvv4lrFiy0xObmhg.jpg)
![City of Blood](https://image.tmdb.org/t/p/w300/s4sBTBBJv03rFG9oPp9gpMwsJ3o.jpg)
![Streets of Fire](https://image.tmdb.org/t/p/w300/t8zwHTDhFem1Yni78EESR6nJIz1.jpg)
![Unthinkable](https://image.tmdb.org/t/p/w300/tIJj4JipZt6pSAGxiAgbBQqemVi.jpg)