Shadow and Bone will certainly have viewers on the edge of their seats from the get-go. There are tons of fight scenes with a slew of different weapons involved, from guns to swords to throwing stars. In the second episode, we also see some human innards on the ground in the corner of one shot. Although it's not a close-up, it may be a good idea to fast-forward through this part if you have squeamish teens.
Moreover, there are a few scenes that hint at the possibility of torture. Although we don't see anything over the top — other than a few characters tied up and threatened with knives — these scenes could be startling for young viewers.