1.   Brilliant detective work with a little luck tossed in to catch the savvy killer.

2.   But Kleinwort Benson, an investment bank, has done a spot of detective work.

3.   Finding the missing parts has been a lucky blending of good fortune and good detective work.

4.   He had always imagined that the key to good detective work was a close observation of details.

5.   In fact tying a pollution to its source can be a tricky piece of detective work.

6.   It takes a bit of detective work to trace the symptom back to the cause.

7.   It takes some detective work to trace the symptom back to its cause.

8.   It took a lot of detective work to discover the cause of the problem.

9.   Much slow and painstaking geological detective work is needed to make correlations such as these, but the results can be very valuable.

10.   Other queries involve a spot of detective work, such as trying to identify a particular type of fibreboard needed for refurbishment work.