As for accessing Rajesh Kumar's novels in PDF format, I couldn't find any official sources that provide free downloads. However, there are some online platforms and websites that may host his works. Please note that downloading copyrighted content without permission is against the law.

Rajesh Kumar is a well-known Tamil novelist, specializing in crime and thriller genres. His novels have gained a massive following in Tamil Nadu and have been widely acclaimed for their engaging storylines, strong characters, and gripping plots.

Would you like more information on Rajesh Kumar or his works?