An Aspen socialite, accused in the Arizona bombing murder of her ex-husband, has hired a law firm from Switzerland to defend her.Pamela Phillips, 51, also has an unrelated case involving an August arrest for an alleged driving under the influence offense in Pitkin County.The Geneva-based law firm of Borel & Barbey will represent Phillips in the Arizona murder case, the Aspen Times reported.Phillips is the ex-wife of Arizona businessman Gary Triano, who was killed in 1996 when his car exploded in the parking lot of a Tucson country club. He died after playing a round of golf on his 53rd birthday. Friends were waiting to take him to a surprise birthday party when they learned he had been killed.Arizona authorities allege that Phillips moved to Aspen after the divorce and then paid her lover $400,000 to kill her ex-husband. Authorities said she wanted to collect a $2 million life insurance policy left for their two children, but held by Phillips, until the children turned 18.Police said Phillips' lover, Ronald Young, 66, was the man who placed the pipe bomb in a canvas bag and put it on the passenger seat of the Lincoln Town Car that Triano was driving when he was killed in Arizona.In 2006, federal authorities executed a search warrant at Phillips' Aspen home. Authorities later released the affidavit, which they said chronicled the relationship between Phillips and Young. Recorded conversations included threats, blackmail, money drops, a secret romance, and evidence of conspiracy in the 1996 slaying, according to investigators.Although Phillips and Young were "persons of interest" in the slaying, no arrests were made until last October, when Young was apprehended in Yorba Linda, Calif., after an Arizona grand jury issued an indictment on charges of conspiracy to commit first-degree murder and first-degree murder.Young fled to Aspen in 1996. The original search for Young was featured in a 2005 episode of "America's Most Wanted. The search for Phillips was also featured on a recent episode of "America's Most Wanted."