Investigator Castillo, Field Investigator at Level, holds a Master's degree in Criminology with a concentration in intelligence and technology. That academic foundation, paired with a deep passion for the criminal justice field, has shaped her into a thorough and analytical investigator who brings careful research and meticulous documentation to every assignment.

A fluent Spanish speaker, Investigator Castillo expands Level's capacity to serve Spanish-speaking clients and witnesses across Massachusetts without the use of third-party interpreters. In witness interviews and field work, her bilingual fluency and the cultural understanding that comes with it often prove decisive in obtaining clear, complete accounts.

Her caseload spans criminal defense, surveillance, witness location, and civil and family matters, and she brings the same disciplined approach to each. Whether the matter involves a high-profile felony defense or a sensitive family investigation, Investigator Castillo is committed to the kind of thorough, ethical work that defines Level's reputation.

Outside the office, Isabel is an avid traveler with a passion for exploring different cultures and cuisines, qualities that translate to the patience and attentiveness she brings to every investigation.

For questions or to request her involvement on a case, please use our contact form or reach out to our office directly.