Silvering

Healing
The Silver are able to heal those whom they have silvered for, to a certain extent. The process leaves a temporary silver mark on the healed body part.
 * The handprint Leo left on Cara Alton's stomach in attempting to heal her (see Cara Mia) was the catalyst for the Revelation.
 * At the beginning of A Bargain in Silver, Drew heals a cut on Emmy's arm by kissing it, leaving a silver mark.