Five men, roughly a million in bonds, and some of the most chilling sex crime allegations in North Texas make up Collin County’s lockups in the last four weeks.

This month’s Dirty John roundup ranks five of the most serious sex crime cases lodged in Collin County detention facilities based on total bond amounts. One additional arrestee, held on charges related to the online solicitation of a minor, is also profiled, despite no listed bond amount.

All individuals listed are presumed innocent until proven guilty. Charges have been filed, but no convictions have been made. Each case will proceed through the courts, where outcomes will be determined by either a plea or a jury verdict.

1. James Hunter Cook
Total Bond: $300,000

  • Arrested: June 6, 2025

  • DOB: Nov. 16, 1986 | Race: White | Gender: Male

  • Height: 5’8” | Weight: 175 lbs | Eyes: Hazel | Hair: Brown

  • Charges:

    • Sexual Assault – Second-Degree Felony — $75,000

    • Burglary of Habitation With Intent to Commit Other Felony – First-Degree Felony — $200,000

    • Assault Family/Household Member Impede Breath/Circulation – Third-Degree Felony — $25,000

2. Mark Eastin
Total Bond: $300,000

  • Arrested: June 11, 2025

  • DOB: May 6, 1961 | Race: White | Gender: Male

  • Height: 6’3” | Weight: 365 lbs | Eyes: Blue | Hair: Blond or Strawberry

  • Charges:

    • Aggravated Sexual Assault of a Child – First-Degree Felony — $100,000

    • Indecency With a Child – Sexual Contact – Second-Degree Felony — $100,000

    • Indecency With a Child – Sexual Contact – Second-Degree Felony — $100,000

3. Marty Duwayne Griego
Total Bond: $200,000

  • Arrested: June 24, 2025

  • DOB: Sept. 13, 1973 | Race: White | Gender: Male

  • Height: 5’7” | Weight: 160 lbs | Eyes: Green | Hair: Black

  • Charge:

    • Continuous Sexual Abuse of a Disabled Individual – First-Degree Felony — $200,000

4. Jose Michael Bartram
Total Bond: $150,000

  • Arrested: June 24, 2025

  • DOB: Nov. 2, 2003 | Race: Black | Gender: Male

  • Height: 5’10” | Weight: 130 lbs | Eyes: Brown | Hair: Black

  • Location: INF Cell 07

  • Charges:

    • Sexual Assault of a Child – Second-Degree Felony — $100,000

    • Indecency With a Child – Exposure – Third-Degree Felony — $50,000

5. Brian Gustavo Bautista
Total Bond: N/A

  • Arrested: May 29, 2025

  • DOB: June 21, 1996 | Race: White | Gender: Male

  • Height: 5’8” | Weight: 135 lbs | Eyes: Brown | Hair: Brown

  • Location: Out of County Housing – LaSalle

  • Charge:

    • Online Solicitation of a Minor – Third-Degree Felony — Bond Not Listed

This month’s list underscores Collin County’s continuing efforts to detain and prosecute alleged sex offenders, especially those accused of targeting minors or vulnerable individuals. Each case will now proceed through the court system, where defendants will have the opportunity to contest the charges or face justice, if convicted, at trial.