Alex Cross (Tyler Perry) figures out that it was Leon Mercier (Jean Reno) who hired Picasso (Matthew Fox). Mercier was embellezing millions so he decided to hire Picasso to kill Fan Yau (Stephanie Jacobsen) and Erich Numemarcher (Werner Daehn).
Mercier didn't realize that Picasso would kill Cross's wife Maria (Carmen Ejogo) and Monica (Rachel Nichols).
Cross gets revenge by planting drugs in Leon's apartment in Singapore, thereby giving Leon the death sentence.
Alex Cross then takes the job in Washington D.C
Thanks Michael R!