Need Suggestion whether to join in Forensic and dispute service of Deloitte

HI , This is Rajesh . I need a valuable advice regarding my job change . Basically i am Sqlserver BI Developer . Recently i got an offer from the FAS Deloitte of F&DS(Forensic and dispute services ) in Technology Department .I am in ambigous state to accept or reject the offer . This field is very new to me . Desperately i need a adivce from you all to accept or reject the offer . It would be great if u can say a few word about Technology wing of F&DS .. and how will be my future would be if i accept the offer ( in terms of demand for this job in the market . ) .

Please post your sincere adivce . Thank you in advance .