April 1, 2006  -- It's always shocking when you hear of someone who has murdered their spouse. But there are signs that a husband or wife is the killing kind, says Dr. Robi Ludwig, psychotherapist and author of "Till Death Do Us Part: Love, Marriage and the Mind of the Killer Spouse."

Below are some traits you should beware of in your significant other.

Traits of a Potential Spouse Killer

Intense controlling behavior

Explosive feelings of rage

Difficulty forming intimate relationships

Poor impulse control

Inability to understand your feelings

Absence of emotions like remorse and sympathy

Searches out easy pleasure (i.e. a thrill seeker)

Intense feelings of victimization and rejection

Devalues human life

Pathologically idealizes partner