So you have to do some detective work to figure out what's really going on.

I'd done more than enough detective work for one day.

I'd like you to do a bit of detective work for me.

Then we went up to my office to do some serious detective work.

And a bit of good detective work on your part, too.

I'd just like to say in the first place that I think you did good detective work.

We'll have to do a little detective work on it.

"But first I'm going to take time out to do a little detective work."

Sometimes it's a matter of doing a little detective work.

All those months of detective work and he had nothing to show for it.

I understand you already have a murder investigation on the go.

She was going to keep her mind on a murder investigation.

But come late to a possible murder investigation and you have a career problem.

He's soon involved in a new murder investigation - and with the dead man's daughter.

This was a murder investigation, and he had not yet so much as seen the body.

The arm had been cut off, which led to a murder investigation.

The first time I killed someone it was during a murder investigation.

"You have to figure out who done it, so we did our research like a murder investigation."

If anything went wrong out there, he wanted someone to know what had happened, so the murder investigation would still go forward.

And another thing, we have to stop this murder investigation.

But now the police are working on a new lead.

It would probably come to nothing, but then most police work did.

Police work never had been Michael's first choice for a career.

"We want the police, the city and community to work together."

The police were working to identify the dead man last night.

About 7,600 police here have worked with no contract for two years.

Help the police and other public services work together across the criminal justice system.

But the police like the way the new units are working.

This way, the police are still working on the case, so they might even catch the second guy.

"If the police are still working on it, we'll often try to hold the body until an identification can be made."

People would have to admit the police work had been pretty impressive.

"I knew good police work was going to break this case."

Even I'd had a gentler introduction to police work than this.

Proper police work was no longer an option available to him.

Most of the time, however, the dark wisdom acquired from police work made her seem older than she was.

A great deal of the necessary police work has been done, but we haven't come upon any promising lead as yet.

We can't spare men for police work of that nature.

And as police work goes, the pay's not bad.

"I am enjoying watching the fine police work of the lieutenant here."

She'd started at the top of the head because thoroughness in police work was worth a great deal more than inspiration.

But then twenty years ago, she hadn't been part of a murder inquiry.

No wonder he didn't want to get involved in a murder inquiry.

Police say they haven't launched a murder inquiry at this stage.

Her death is reported to be suspicious and police launch a murder inquiry.

The only interesting thing he turned up was the murder inquiry.

The murder inquiry has led to one person's being charged.

God, but it was a hell of a night to be starting a murder inquiry.

As a result of this, a murder inquiry has been set up.

On 5 October 2012, police officially made the case into a murder inquiry.

Rain asked whether there was any progress in the murder inquiry.