Fast X: 25 WTF Moments

Because the filmmakers evidently felt that Fast X didn't have quite enough family yet, mid-way through the film we're introduced to Brazilian street racer Isabela (Daniela Melchior), who is very nearly killed when Reyes bombs her car.

Once Isabela recuperates, it's revealed that she's none other than the sister of Elena (Elsa Pataky), giving her an obviously intimate link to Dom and his son.

All the same, that's where Isabela takes her leave out of the movie, with Dom insisting she stay out of the fight for the sake of her safety.

But with the door being very clearly left open for her to return in a sequel, it'd be shocking if she didn't confront Cipher for killing her sister in either Fast 11 or Fast 12.