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Chasing Ghosts
A surprising discovery leaves Alex reeling as he tries to adjust his theories in light of what he found at Philadelphia City Hall. Meanwhile, the Rezident questions Katya and Mark's dedication and Natalie discovers the dangers of Black Dagger.
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Other episodes for this season
![Pilot](https://image.tmdb.org/t/p/w300/ry6kcdOffv4zrtVDDFfYNCboHqI.jpg)
![Teamwork](https://image.tmdb.org/t/p/w300/cc6o5dUoafKpzaUUJEibZDY8APD.jpg)
![Surreptitious Entry](https://image.tmdb.org/t/p/w300/7KpJ7Dqm5gyMu7IKBzEVBUiWYaz.jpg)
![Chasing Ghosts](https://image.tmdb.org/t/p/w300/b0g65CvEzjlzWqQRPfj2jPItHbp.jpg)
![Tipping Point](https://image.tmdb.org/t/p/w300/amy3X1iv7TJnspwGULMcrXoNhaH.jpg)
![Liars and Thieves](https://image.tmdb.org/t/p/w300/9nttqLcSpX9ZcDqrB1O8sbnTm6A.jpg)
![Stranger in a Strange Land](https://image.tmdb.org/t/p/w300/DloQ17JsiiRxC3UEhZJ09eE6Lt.jpg)
![The Arrival](https://image.tmdb.org/t/p/w300/nNUPVFvXJe1ySulUCZLOvT18ZCM.jpg)
![Clean Hands](https://image.tmdb.org/t/p/w300/wqFii1VJPmpq5zHKditU0ZEJrgU.jpg)
![A Convenient Place to Die](https://image.tmdb.org/t/p/w300/ezUcDGDIuASvxjdmX79llDkZMuv.jpg)
![Blowback](https://image.tmdb.org/t/p/w300/e9UdcSHbeY4garnLMPiW3WqogJi.jpg)
![Those Who Help Themselves](https://image.tmdb.org/t/p/w300/9d5Nnj60IAzXFK5lOARD2Vf4g75.jpg)
![Family Crisis](https://image.tmdb.org/t/p/w300/nfQ8vgopPghaZRd3JORIxCyElAP.jpg)