[header] How to interview someone [title] Do some background research. [step] You have a resume and cover letter presenting information that is said to be factual. Before the candidate even enters your office, take some time to verify the information he or she has given you. 
The job market is tough, and it's not unthinkable for candidates to embellish their resumes a bit to get an edge over the dozens of other people who applied for the job. Doing research beforehand is also a good way to prep yourself for the interview so you can ask informed questions instead of just winging it with generic ones.