Looking at the lighting: high contrast and chiaroscuro

In our thriller there are two key areas:
one is the therapists scenes  and the other is the flashback scenes.
To distinguish the moods of each of these scenes we are using two types of lighting:

Chiaroscuro;
 This is low key lighting. we our going to use low key lighting for the therapist scenes. this is so that the whole scene is quite dark highlighting the mood of the scene as dark as the girl who is in therapy had been attacked in some sort of way. a great example of chiaroscuro lighting is the opening sequence in Casino Royale where Bond talks about his first two kills.

High contrast lighting;
 High contrast lighting is going to be is used during the flashbacks to the attack, this contrasts the therapy scenes and the audience can clearly tell the difference between the two scene types. the high contrast also makes the scene harder to picture like the victim is scarred from the whole attack and therefore harder to distinguish features on the attackers face/ body making the attacker unidentifiable.
a great example of high contrast lighting is also in the Casino Royale opening sequence when Bond flashes back to his first kill in Pakistan and then we see his first kill in the changing rooms of the cricket ground in Pakistan in high contrast.