There are five people with a pretty clear motive, all of whom had the opportunity.
But what seems like a clear motive for Thomas - former pal left behind - may not be.
In fact, there seemed to be no clear motive.
The police have established no clear motive in the killings.
I was a man with a clear motive, after all.
I went to Vietnam in early 1968 and nobody shot me, despite clear motive.
Not just those with a clear motive, but anyone who might have had the right contacts.
In an age when information is power, there are clear motives for archiving.
What we still lack is a clear motive and hard facts.
Police have not yet determined a clear motive or found a solid suspect.