When two women were found stabbed to death in an inner room of an apartment, it was first believed that it was a case of mutual homicide. Of the following clues found at the scene, the one that indicates that it was more likely a case of murder by a third party is the fact that

Most Police Officer exams test candidates for the following skills:
Deductive Reasoning
Inductive Reasoning
Spatial Orientation
Memorization
Visualization
Reading Comprehension
Verbal Expression
Mathematical Reasoning
Problem Solving
Written Expression