It’s a question that has puzzled the FBI for years: Where is Boston Irish-American gangster James “Whitey” Bulger?

If you know the answer, you could be in line for a $2 million dollar reward, which is what the FBI is currently offering for information leading to his arrest.

Be warned, however – the FBI also says that Bulger, who is wanted for his alleged involvement in numerous murders from the early 1970s to the mid-1980s, is likely to be “armed and extremely dangerous.”  He is also known to carry a knife at all times.

When it comes to organized crime, you name, Bulger has done it all: extortion, drug dealing, loan-sharking, gambling are all on his charge sheet.

Since leaving the U.S. Air Force in 1952, Bulger led a remarkably successful life of crime.  After his release from Alcatraz in the 1960s, where he served a sentence for bank robbery, he headed Boston's Irish mob.

In South Boston, where he was revered by some residents and where he was the source of numerous urban myths – some of which portrayed him as a “Robin Hood” figure - he ran a crime gang for 30 years.

He funded his activities through the extortion of illegitimate criminal operations including gambling, loan-sharking, and drugs.

In 1995, Bulger and six other Boston-area organized crime figures were indicted by a Grand Jury for racketeering and in 2000, he was charged for his role in 19 murders during the 1970s and 1980s.

The Feds also say that the Bulger has traveled extensively thoughout the the U.S., and has also been to Canada, England, France, Italy, Ireland, and Mexico.

He is known to wear disguises, pays for everything in cash, and never stays in any one place for long periods of time.

There have also been apparent sightings in Cambodia, Central and South America, Denmark, France, Germany, Italy, Spain, and Thailand.

He has been featured on the show ‘America’s Most Wanted” a remarkable 14 times – but to no avail, and has always managed to stay one step ahead of the law.

His partner, Catherine Elizabeth Greig, was indicted in 1997 for harboring Bulger, and is known for her affinity for dogs and her love of beauty salons.

Recently Irish director Jim Sheridan discussed plans to make a film about Bulger, adapted from a book called, “"Black Mass: The True Story of an Unholy Alliance Between the FBI and the Irish Mob", by Boston Globe reporters, Dick Lehr and Gerard O'Neill.

"This is a story of a corrupt system and about how an angry guy became the second most wanted man after Bin Laden," Sheridan told Variety.

The Feds say that is Bulger is also an avid reader of history, with a fondness for libraries and historic sites. He is also is well known for his love of animals, especially dogs, and is known to befriend people with dogs.

Just goes to show that even vicious gangsters can have a sensitive side…