格里高利·大卫·罗伯兹（Gregory David Roberts），出生于澳大利亚墨尔本，他的“真实经历”比任何小说都更具传奇色彩，从学生时代就是个激进的运动分子，活跃于各种反战、反法西斯、反政府组织，深信自己可以改变世界。优异的天赋，使他成为大学中最年轻的哲学和文学讲师，却在25岁婚姻破裂，失去妻子，更失去5岁爱女的监护权。他选择用海洛因来填补生命中乍然到来的空洞，从一个理想主义者堕落为毒虫。

上瘾的需求逼使他拿着仿造手枪，以全套西装打扮、温和的谈吐、礼貌的举止，去抢劫银行，因而获得“绅士大盗”（The Gentleman Bandit）的封号。被捕后，24次的抢劫纪录换来19年徒刑。两年半后，罗伯兹于光天化日下逃出澳大利亚最戒备森严的重刑监狱，短暂停留新西兰，然后流亡印度。

这段长达八年的印度流亡岁月，便成了《项塔兰》最真实的蓝本。1991年他在德国被捕，决心坦然面对过去，入狱服刑。1997年获释出狱后，他着手写下《项塔兰》这部厚达千页的自传式小说，2003年出版后一鸣惊人，成为专职畅销作家。

罗伯兹目前定居孟买，每个月除了看上千封的读者来信之外（其中有九成是询问小说中那位有着湖水绿眼睛的女人，如今身在何方），主要协助民间团体为当地贫乏的医疗服务贡献心力。同时继续将自己如梦似戏的人生，写成下一部小说。

In 1978, gifted student and writer Greg Roberts turned to heroin when his marriage collapsed, feeding his addiction with a string of robberies. Caught and convicted, he was given a nineteen-year sentence. After two years, he escaped from a maximum- security prison, spending the next ten years on the run as Australia's most wanted man. Hiding in Bombay, he established a medical clinic for slum- dwellers, worked in the Bollywood film industry and served time in the notorious Arthur Road prison. He was recruited by one of the most charismatic branches of the Bombay mafia for whom he worked as a forger, counterfeiter, and smuggler, and fought alongside a unit of mujaheddin guerrilla fighters in Afghanistan. His debut novel, SHANTARAM, is based on this ten-year period of his life in Bombay. The result is an epic tale of slums and five-star hotels, romantic love and prison torture, mafia gang wars and Bollywood films. A gripping adventure story, SHANTARAM is also a superbly written meditation on good and evil and an authentic evocation of Bombay life.