james flanders. what was he like? >> very charismatic. say he was good at his job. >> i wonder what it would be like to listen to him preach? >> you can youtube him. >> yes, you can. >> we all at times forget the promises of god's word. >> the pastor grew there calvary emerald coast church from scratch. spread it through youtube. and by the time marie began attended tending, every service filled up. >> they were a tight-knit family, that church. >> but now with marie gone they were caring for little grace. so, did the flanders have any idea what happened to marie? perhaps they knew who the father was. and where that abusive boyfriend might be found. and oh, yes, there was a story all right. >> coming up -- questions mount and leads are running out. it was time running out too? >> he searched it but there was nothing to search. it was clean. this case for sure, was an investigator's worst nightmare. >> when "dateline" continues. some mental health meds. and it's unlikely to improve without treatment. i felt like my movements were in the sp