Lee Strobel (former athirst, investigative journalist) wrote a book titled The Case For Christ.
His goal was to write the difinive work on proving that Jesus wasn't who the Christians claim him to be. It backfired on him and he became a Christian.
(See below comment from @weststadtgesicht with a more accurate quote.)
If you're wanting to read more on this topic, definitely read both sides and determine which has the stronger case. But the Strobel book seems to be well researched and well written, at least to me.
That's not really how he himself describes it. His wife became a Christian and after going to church with her he wanted to investigate the backgrounds - he didn't want to disprove Christianity and was quite open-minded instead:
She invited me to a church, where I heard the Gospel explained in a way I could understand it. While I didn't believe it, I realized that if it were true, it would have big implications for my life. So I decided to use my journalism experience and legal expertise (at the time, I was legal editor of The Chicago Tribune) to investigate whether there was any credibility to Christianity or any other faith system.
Where did you find that his goal was to prove Jesus wasn't who Christians claim to be? From what I've read about Lee Strobel, he was sort of an atheist by default and converted when his wife did. He became a pastor and only wrote the Case for Christ more than a decade later