"In these cases, the decision to kill seems to be the only way for the murderer to maintain absolute control over their partner. Often, when jealousy is the motive, the death of the partner comes after yet another violent argument. Of course, we must not forget that a whole series of murders committed within passionate couples had very little to do with passion and were based on much more pragmatic and instrumental aspects, such as obtaining a significant financial advantage or a lucrative inheritance."