If this happens, a bench warrant will be issued for your defendant's arrest. They will also be identified by police as a fugitive. Harrison Bail Bonds will do everything possible to retrieve your defendant. This includes the hiring of Bail Enforcement Agents.
If your defendant doesn't appear, you should also help locate your defendant and convince them to appear in court. The longer it takes to get them to appear, the more likely it is that the judge will remit your defendant's case to the state. When this happens, your collateral is forfeit.