| Name | First Aired | Runtime | Image | |
|---|---|---|---|---|
| S04E37 | Again. |
September 8, 2021
|
26 | |
| S04E38 | That's what I get for being a psychic. |
September 15, 2021
|
26 | |
| S04E39 | We are going to buy ourselves some time. |
September 22, 2021
|
26 | |
| S04E40 | I am terrified that I am going to live forever. |
September 29, 2021
|
28 | |
| S04E41 | That's not who I am. |
October 6, 2021
|
24 | |
| S04E42 |
Absence makes the heart grow fond.
mid-season finale
|
October 13, 2021
|
23 | |
| S04E43 | Life will be difficult and you won't rememer why. |
October 27, 2021
|
30 | |
| S04E44 | You turn into me. Remember that. |
November 3, 2021
|
26 | |
| S04E45 | I wonder what it is about that place. |
November 10, 2021
|
25 | |
| S04E46 | Information sent backwards through time tends to propagate backwards through time. |
November 17, 2021
|
24 | |
| S04E47 | We take charge of our destiny. |
November 24, 2021
|
27 | |
| S04E48 |
We have the bear and the birdsong.
season finale
|
December 11, 2021
|
41 |
No artwork of this type.
No artwork of this type.
No artwork of this type.