 
     
        In Chicago, Marissa Irvine arrives at 14 Arthur Avenue, expecting to pick up her young son Milo from his first playdate with a boy at his new school. But the woman who answers the door isn't a mother she recognizes. She isn't the nanny. She doesn't have Milo. And so begins every parent's worst nightmare.
| Season | From | To | Episodes | 
|---|---|---|---|
| All Seasons | |||
| Specials | 0 | ||
| Season 1 | November 2025 | November 2025 | 8 | 
| Unassigned Episodes | 0 | 
| Season | From | To | Episodes | 
|---|---|---|---|
| Season 1 | 0 | ||
| Unassigned Episodes | 8 | 
| Name | Number of Episodes | Dates | |
|---|---|---|---|
| Minkie Spiro | 5 | 11/06/2025 | |
| Kate Dennis | 4 | 11/13/2025 - 11/20/2025 | 
| Name | Number of Episodes | Dates | |
|---|---|---|---|
| Megan Gallagher | 2 | 11/06/2025 | 
| Name | Number of Episodes | Dates | |
|---|---|---|---|
| Gareth Neame | N/A | 
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