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Peter
Walter explains to Olivia how Peter came from the alternate universe, and how he was willing to risk everything to save his son.
![](https://image.tmdb.org/t/p/w300/qZGbLaRJ0FVekRWCRDu2ZdBFcJI.jpg)
![](https://image.tmdb.org/t/p/w300/aFZh55ydDo6viiybW5PpEjCnC9p.jpg)
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Other episodes for this season
![A New Day in the Old Town](https://image.tmdb.org/t/p/w300/sopmstWa2V01MQL5kRgP0OuLG2Q.jpg)
![Night of Desirable Objects](https://image.tmdb.org/t/p/w300/41k6iZ4OWa3DUMGv0Dl48MF7hQV.jpg)
![Fracture](https://image.tmdb.org/t/p/w300/4yspXny6VsR8PAq8Ty4EUjkSsNf.jpg)
![Momentum Deferred](https://image.tmdb.org/t/p/w300/idGq4mYKwYe465PWGYmNZXHHRE8.jpg)
![Dream Logic](https://image.tmdb.org/t/p/w300/53G5XcQe56qxvFAN8bT4Txa0Hxn.jpg)
![Earthling](https://image.tmdb.org/t/p/w300/hJY5ZuMLSTgtHBWLaPfXBq5aEQ3.jpg)
![Of Human Action](https://image.tmdb.org/t/p/w300/elUBWP1PG1N3qLJex63gpVEPRvQ.jpg)
![August](https://image.tmdb.org/t/p/w300/csgPL40TYsw6EIyoSJWVDg55uI3.jpg)
![Snakehead](https://image.tmdb.org/t/p/w300/fLzdavsqAvEC7YlCCP1F8Y45he3.jpg)
![Grey Matters](https://image.tmdb.org/t/p/w300/3Zk4Wcu8Hp5XhoFIqUlE1Y5kASk.jpg)
![Unearthed](https://image.tmdb.org/t/p/w300/rftCf4EsUWGMpJS8CLRCPLkj3u0.jpg)
![Johari Window](https://image.tmdb.org/t/p/w300/1wHQDS7GpISa3PHAu6JgvMUbOps.jpg)
![What Lies Below](https://image.tmdb.org/t/p/w300/1knX4QN7UfVVReDSUdmyWPAW5LP.jpg)
![The Bishop Revival](https://image.tmdb.org/t/p/w300/qyAx5jeZJK7qnFtUu4rbPNKVRxj.jpg)
![Jacksonville](https://image.tmdb.org/t/p/w300/ucAZ2SDmy4jOWrTbVFSgUSth3Ej.jpg)
![Peter](https://image.tmdb.org/t/p/w300/hHUJNRP2tUXI29NJEYEql49LfLB.jpg)
![Olivia. In the Lab. With the Revolver.](https://image.tmdb.org/t/p/w300/kUgBRChAKvOwAe1yw6D0XHM69fs.jpg)
![White Tulip](https://image.tmdb.org/t/p/w300/h80d2N0Gb7rJHIaL9E61VaT7R93.jpg)
![The Man From The Other Side](https://image.tmdb.org/t/p/w300/4gDGLx7zYnFjfqPzCFR9kNRBuce.jpg)
![Brown Betty](https://image.tmdb.org/t/p/w300/dqQ5jVtcl1yZGpvrlUFN04xsgjd.jpg)
![Northwest Passage](https://image.tmdb.org/t/p/w300/smFucuWQzzfqazEkKzvyFaU9IJ6.jpg)
![Over There (1)](https://image.tmdb.org/t/p/w300/5wTiY4LQeFNfWHEBShuzLCUcWp7.jpg)
![Over There (2)](https://image.tmdb.org/t/p/w300/xRrZdfD8dVkzz5Z9X10TsTzvueW.jpg)
Walter explains to Olivia how Peter came from the alternate universe, and how he was willing to risk everything to save his son.